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Home Return to list Winter Storm Warning 0007 Issued by the Cheyenne Forecast Office
Action: New Issued At: 2026-05-17 02:50:19 244 WWUS45 KCYS 170750 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 150 AM MDT Sun May 17 2026 WYZ103-114-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow possible. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 10 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-172315- /O.UPG.KCYS.WS.A.0005.260518T0600Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-172315- /O.NEW.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ Sierra Madre Range- 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 6 and 12 inches, with lower amounts on the western side of the range. Winds gusting as high as 55 mph. * WHERE...Sierra Madre Range. * WHEN...From 10 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ101-105-106-117-172315- /O.NEW.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Shirley Basin, Medicine Bow, Whitaker, Bordeaux, Federal, Horse Creek, Douglas, Bill, Glenrock, and Deer Creek 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ Trudel Action: New Issued At: 2026-05-17 02:50:19 244 WWUS45 KCYS 170750 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 150 AM MDT Sun May 17 2026 WYZ103-114-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow possible. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 10 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-172315- /O.UPG.KCYS.WS.A.0005.260518T0600Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-172315- /O.NEW.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ Sierra Madre Range- 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 6 and 12 inches, with lower amounts on the western side of the range. Winds gusting as high as 55 mph. * WHERE...Sierra Madre Range. * WHEN...From 10 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ101-105-106-117-172315- /O.NEW.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Shirley Basin, Medicine Bow, Whitaker, Bordeaux, Federal, Horse Creek, Douglas, Bill, Glenrock, and Deer Creek 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ Trudel Action: New Issued At: 2026-05-17 02:50:19 244 WWUS45 KCYS 170750 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 150 AM MDT Sun May 17 2026 WYZ103-114-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow possible. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 10 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-172315- /O.UPG.KCYS.WS.A.0005.260518T0600Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-172315- /O.NEW.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ Sierra Madre Range- 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 6 and 12 inches, with lower amounts on the western side of the range. Winds gusting as high as 55 mph. * WHERE...Sierra Madre Range. * WHEN...From 10 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ101-105-106-117-172315- /O.NEW.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Shirley Basin, Medicine Bow, Whitaker, Bordeaux, Federal, Horse Creek, Douglas, Bill, Glenrock, and Deer Creek 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ Trudel Action: New Issued At: 2026-05-17 02:50:19 244 WWUS45 KCYS 170750 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 150 AM MDT Sun May 17 2026 WYZ103-114-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow possible. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 10 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-172315- /O.UPG.KCYS.WS.A.0005.260518T0000Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-172315- /O.UPG.KCYS.WS.A.0005.260518T0600Z-260519T0000Z/ /O.NEW.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 150 AM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-172315- /O.NEW.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ Sierra Madre Range- 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 6 and 12 inches, with lower amounts on the western side of the range. Winds gusting as high as 55 mph. * WHERE...Sierra Madre Range. * WHEN...From 10 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ101-105-106-117-172315- /O.NEW.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Shirley Basin, Medicine Bow, Whitaker, Bordeaux, Federal, Horse Creek, Douglas, Bill, Glenrock, and Deer Creek 150 AM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ Trudel Action: Continued Issued At: 2026-05-17 13:46:24 230 WWUS45 KCYS 171845 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1245 PM MDT Sun May 17 2026 WYZ112-181200- /O.UPG.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ /O.EXA.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Sierra Madre Range- 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations up to 15 inches. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Arlington, Seminoe Dam, and Elk Mountain 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-181200- /O.CON.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ111-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ101-105-106-117-181200- /O.CON.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Federal, Bordeaux, Bill, Horse Creek, Deer Creek, Medicine Bow, Douglas, Whitaker, Glenrock, and Shirley Basin 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ CG Action: Continued Issued At: 2026-05-17 13:46:24 230 WWUS45 KCYS 171845 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1245 PM MDT Sun May 17 2026 WYZ112-181200- /O.UPG.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ /O.EXA.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Sierra Madre Range- 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations up to 15 inches. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Arlington, Seminoe Dam, and Elk Mountain 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-181200- /O.CON.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ111-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ101-105-106-117-181200- /O.CON.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Federal, Bordeaux, Bill, Horse Creek, Deer Creek, Medicine Bow, Douglas, Whitaker, Glenrock, and Shirley Basin 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ CG Action: Continued Issued At: 2026-05-17 13:46:24 230 WWUS45 KCYS 171845 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1245 PM MDT Sun May 17 2026 WYZ112-181200- /O.UPG.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ /O.EXA.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Sierra Madre Range- 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations up to 15 inches. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Arlington, Seminoe Dam, and Elk Mountain 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-181200- /O.CON.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ111-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ101-105-106-117-181200- /O.CON.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Federal, Bordeaux, Bill, Horse Creek, Deer Creek, Medicine Bow, Douglas, Whitaker, Glenrock, and Shirley Basin 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ CG Action: Area Extended Issued At: 2026-05-17 13:46:24 230 WWUS45 KCYS 171845 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1245 PM MDT Sun May 17 2026 WYZ112-181200- /O.UPG.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ /O.EXA.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Sierra Madre Range- 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations up to 15 inches. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Arlington, Seminoe Dam, and Elk Mountain 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-181200- /O.CON.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ111-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ101-105-106-117-181200- /O.CON.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Federal, Bordeaux, Bill, Horse Creek, Deer Creek, Medicine Bow, Douglas, Whitaker, Glenrock, and Shirley Basin 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ CG Action: Continued Issued At: 2026-05-17 13:46:24 230 WWUS45 KCYS 171845 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1245 PM MDT Sun May 17 2026 WYZ112-181200- /O.UPG.KCYS.WW.Y.0017.260518T0400Z-260519T0000Z/ /O.EXA.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Sierra Madre Range- 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow expected. Total snow accumulations up to 15 inches. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Garrett, Centennial, and Albany 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Arlington, Seminoe Dam, and Elk Mountain 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ116-181200- /O.CON.KCYS.WS.W.0007.260518T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT MONDAY... * WHAT...Heavy snow. Total snow accumulations 6 to 10 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 6 PM this evening to 6 PM MDT Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-181200- /O.CON.KCYS.WS.W.0007.260518T0600Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 1245 PM MDT Sun May 17 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ111-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-181200- /O.EXA.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ101-105-106-117-181200- /O.CON.KCYS.WW.Y.0017.260518T0600Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Federal, Bordeaux, Bill, Horse Creek, Deer Creek, Medicine Bow, Douglas, Whitaker, Glenrock, and Shirley Basin 1245 PM MDT Sun May 17 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 6 PM MDT Monday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ CG Action: Continued Issued At: 2026-05-18 02:31:47 293 WWUS45 KCYS 180731 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 131 AM MDT Mon May 18 2026 WYZ103-114-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Albany, Garrett, and Centennial 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected with locally higher amounts possible. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Pumpkin Vine, Buford, and Vedauwoo 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 7 to 14 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Bordeaux, Glenrock, Horse Creek, Whitaker, Medicine Bow, Shirley Basin, Bill, Deer Creek, Federal, and Douglas 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Trudel Action: Continued Issued At: 2026-05-18 02:31:47 293 WWUS45 KCYS 180731 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 131 AM MDT Mon May 18 2026 WYZ103-114-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Albany, Garrett, and Centennial 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected with locally higher amounts possible. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Pumpkin Vine, Buford, and Vedauwoo 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 7 to 14 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Bordeaux, Glenrock, Horse Creek, Whitaker, Medicine Bow, Shirley Basin, Bill, Deer Creek, Federal, and Douglas 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Trudel Action: Continued Issued At: 2026-05-18 02:31:47 293 WWUS45 KCYS 180731 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 131 AM MDT Mon May 18 2026 WYZ103-114-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Albany, Garrett, and Centennial 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected with locally higher amounts possible. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Pumpkin Vine, Buford, and Vedauwoo 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 7 to 14 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Bordeaux, Glenrock, Horse Creek, Whitaker, Medicine Bow, Shirley Basin, Bill, Deer Creek, Federal, and Douglas 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Trudel Action: Continued Issued At: 2026-05-18 02:31:47 293 WWUS45 KCYS 180731 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 131 AM MDT Mon May 18 2026 WYZ103-114-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Albany, Garrett, and Centennial 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected with locally higher amounts possible. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Pumpkin Vine, Buford, and Vedauwoo 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 7 to 14 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Bordeaux, Glenrock, Horse Creek, Whitaker, Medicine Bow, Shirley Basin, Bill, Deer Creek, Federal, and Douglas 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Trudel Action: Continued Issued At: 2026-05-18 02:31:47 293 WWUS45 KCYS 180731 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 131 AM MDT Mon May 18 2026 WYZ103-114-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Albany, Garrett, and Centennial 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 10 to 20 inches expected with locally higher amounts possible. Winds could gust as high as 30 to 40 mph with periods of blowing and drifting snow, especially above 8500 feet. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-110-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains-North Snowy Range Foothills- Including the cities of Seminoe Dam, Elk Mountain, and Arlington 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of drifting snow. Total snow accumulations 6 to 12 inches with higher amounts near the mountains. Winds could gust as high as 35 to 45 mph with periods of blowing and drifting snow. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Scattered power outages possible due to heavy wet snow on trees and powerlines. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow and periods of blowing snow. Total snow accumulations 5 to 10 inches expected with locally higher amounts near the mountains. Winds could gust as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow expected. Total snow accumulation 8 to 16 inches, mainly on the eastern side of the Range. Winds gusting as high as 50 mph with periods of blowing and drifting snow. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-182200- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Pumpkin Vine, Buford, and Vedauwoo 131 AM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Total snow accumulations 7 to 14 inches expected with locally higher amounts. Winds could gust as high as 30 to 40 mph with some drifting snow expected. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Bordeaux, Glenrock, Horse Creek, Whitaker, Medicine Bow, Shirley Basin, Bill, Deer Creek, Federal, and Douglas 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow expected. Total snow accumulations 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and periods of blowing snow. Total snow accumulations 3 to 6 inches, locally heavier in the northern extent of the zone. Winds gusting as high as 50 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-182200- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 131 AM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow expected. Total snow accumulations between 2 to 6 inches. Winds gusting as high as 35 mph. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. * ADDITIONAL DETAILS...Portions of the Laramie Valley including Laramie itself could see amounts on the lower end due to westerly winds, but portions of the Valley including I-80 may see on the higher end of these amounts. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Trudel Action: Continued Issued At: 2026-05-18 15:41:54 925 WWUS45 KCYS 182041 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 241 PM MDT Mon May 18 2026 WYZ110-190000- /O.EXP.KCYS.BZ.W.0001.000000T0000Z-260518T2100Z/ /O.EXA.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ North Snowy Range Foothills- Including the cities of Elk Mountain and Arlington 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLIZZARD WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Centennial, Albany, and Garrett 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains- Including the cities of Seminoe Dam 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. Winds gusting as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 40 mph. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Medicine Bow, Whitaker, Bordeaux, Glenrock, Federal, Deer Creek, Douglas, Bill, Shirley Basin, and Horse Creek 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CG Action: Continued Issued At: 2026-05-18 15:41:54 925 WWUS45 KCYS 182041 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 241 PM MDT Mon May 18 2026 WYZ110-190000- /O.EXP.KCYS.BZ.W.0001.000000T0000Z-260518T2100Z/ /O.EXA.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ North Snowy Range Foothills- Including the cities of Elk Mountain and Arlington 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLIZZARD WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Centennial, Albany, and Garrett 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains- Including the cities of Seminoe Dam 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. Winds gusting as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 40 mph. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Medicine Bow, Whitaker, Bordeaux, Glenrock, Federal, Deer Creek, Douglas, Bill, Shirley Basin, and Horse Creek 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CG Action: Continued Issued At: 2026-05-18 15:41:54 925 WWUS45 KCYS 182041 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 241 PM MDT Mon May 18 2026 WYZ110-190000- /O.EXP.KCYS.BZ.W.0001.000000T0000Z-260518T2100Z/ /O.EXA.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ North Snowy Range Foothills- Including the cities of Elk Mountain and Arlington 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLIZZARD WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Centennial, Albany, and Garrett 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains- Including the cities of Seminoe Dam 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. Winds gusting as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 40 mph. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Medicine Bow, Whitaker, Bordeaux, Glenrock, Federal, Deer Creek, Douglas, Bill, Shirley Basin, and Horse Creek 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CG Action: Continued Issued At: 2026-05-18 15:41:54 925 WWUS45 KCYS 182041 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 241 PM MDT Mon May 18 2026 WYZ110-190000- /O.EXP.KCYS.BZ.W.0001.000000T0000Z-260518T2100Z/ /O.EXA.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ North Snowy Range Foothills- Including the cities of Elk Mountain and Arlington 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLIZZARD WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Centennial, Albany, and Garrett 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains- Including the cities of Seminoe Dam 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. Winds gusting as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 40 mph. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Medicine Bow, Whitaker, Bordeaux, Glenrock, Federal, Deer Creek, Douglas, Bill, Shirley Basin, and Horse Creek 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CG Action: Continued Issued At: 2026-05-18 15:41:54 925 WWUS45 KCYS 182041 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 241 PM MDT Mon May 18 2026 WYZ110-190000- /O.EXP.KCYS.BZ.W.0001.000000T0000Z-260518T2100Z/ /O.EXA.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ North Snowy Range Foothills- Including the cities of Elk Mountain and Arlington 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM MDT THIS EVENING... ...BLIZZARD WARNING WILL EXPIRE AT 3 PM MDT THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-114-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Snowy Range- Including the cities of Centennial, Albany, and Garrett 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...Snowy Range and North Laramie Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Ferris/Seminoe/Shirley Mountains- Including the cities of Seminoe Dam 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80, and Ferris/Seminoe/Shirley Mountains. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Heavy wet snow. Roads, and especially bridges, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ109-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Central Carbon County- Including the cities of Rawlins 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to three inches. Winds gusting as high as 45 mph. * WHERE...Central Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ112-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ Sierra Madre Range- 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to 4 inches. Winds gusting as high as 40 mph. * WHERE...Sierra Madre Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes. Strong winds could cause tree damage. * ADDITIONAL DETAILS...North to northeast facing slopes and ridges will see the highest accumulations, with accumulations much lower on the western side of the range near Dixon and Baggs. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-190000- /O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 241 PM MDT Mon May 18 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...South Laramie Range including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order. && $$ WYZ101-105-106-117-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-South Laramie Range Foothills- Including the cities of Medicine Bow, Whitaker, Bordeaux, Glenrock, Federal, Deer Creek, Douglas, Bill, Shirley Basin, and Horse Creek 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. * WHERE...Converse County Lower Elevations, Shirley Basin, Central Laramie Range and Southwest Platte County, and South Laramie Range Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Monday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury. && $$ WYZ111-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Southwest Carbon County- Including the cities of Baggs 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to two inches. Winds gusting as high as 45 mph. * WHERE...Southwest Carbon County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. Gusty winds could bring down tree branches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ115-190000- /O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Laramie Valley- Including the cities of Laramie and Bosler 241 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations up to one inch. * WHERE...Laramie Valley. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Monday evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ CG Action: Expired Issued At: 2026-05-18 18:39:01 753 WWUS45 KCYS 182338 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 538 PM MDT Mon May 18 2026 WYZ103-104-109-112-114-116-190045- /O.EXP.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/ North Laramie Range-Ferris/Seminoe/Shirley Mountains-Central Carbon County-Sierra Madre Range-Snowy Range-South Laramie Range- Including the cities of Garrett, Seminoe Dam, Centennial, Pumpkin Vine, Buford, Rawlins, Albany, and Vedauwoo 538 PM MDT Mon May 18 2026 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow has ended or will be coming to an end shortly, use caution while driving as roads may become and/or stay slick as temperatures drop. $$ WYZ101-105-106-110-111-115-117-190045- /O.EXP.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/ Converse County Lower Elevations-Shirley Basin-Central Laramie Range and Southwest Platte County-North Snowy Range Foothills- Southwest Carbon County-Laramie Valley-South Laramie Range Foothills- Including the cities of Bordeaux, Deer Creek, Horse Creek, Baggs, Glenrock, Bosler, Arlington, Bill, Whitaker, Federal, Laramie, Shirley Basin, Elk Mountain, Medicine Bow, and Douglas 538 PM MDT Mon May 18 2026 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow has ended or will be coming to an end shortly, use caution while driving as roads may become and/or stay slick as temperatures drop. $$ RZ | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||