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Home Return to list Winter Storm Warning 0002 Issued by the Riverton Forecast Office
Action: New Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: New Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: New Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: New Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Continued Issued At: 2026-02-23 12:50:21 561 WWUS45 KRIW 231849 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1149 AM MST Mon Feb 23 2026 WYZ001-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 4 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-241400- /O.EXA.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Isolated accumulation up to 2 feet is possible for the highest elevations. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-241400- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-23 12:50:21 561 WWUS45 KRIW 231849 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1149 AM MST Mon Feb 23 2026 WYZ001-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 4 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-241400- /O.EXA.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Isolated accumulation up to 2 feet is possible for the highest elevations. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-241400- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-23 12:50:21 561 WWUS45 KRIW 231849 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1149 AM MST Mon Feb 23 2026 WYZ001-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 4 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-241400- /O.EXA.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Isolated accumulation up to 2 feet is possible for the highest elevations. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-241400- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-23 12:50:21 561 WWUS45 KRIW 231849 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1149 AM MST Mon Feb 23 2026 WYZ001-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 4 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-241400- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 1149 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-241400- /O.EXA.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Isolated accumulation up to 2 feet is possible for the highest elevations. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-241400- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1149 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-24 02:55:41 267 WWUS45 KRIW 240855 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 155 AM MST Tue Feb 24 2026 WYZ001-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 18 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 18 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Continued Issued At: 2026-02-24 02:55:41 267 WWUS45 KRIW 240855 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 155 AM MST Tue Feb 24 2026 WYZ001-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 18 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 18 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Continued Issued At: 2026-02-24 02:55:41 267 WWUS45 KRIW 240855 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 155 AM MST Tue Feb 24 2026 WYZ001-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 18 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 18 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Continued Issued At: 2026-02-24 02:55:41 267 WWUS45 KRIW 240855 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 155 AM MST Tue Feb 24 2026 WYZ001-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Lake, Old Faithful, and Mammoth 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 18 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-242300- /O.CON.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 155 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 8 and 15 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 18 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-242300- /O.CON.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 155 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...From 5 AM early this morning to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Continued Issued At: 2026-02-24 12:43:50 677 WWUS45 KRIW 241843 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1143 AM MST Tue Feb 24 2026 WYZ001-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 10 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 4 to 8 inches in central portions of Yellowstone, and up to 3 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Additional snow accumulations 12 to 18 inches over the western half of the Absaroka Range, with 4 to 8 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 12 to 22 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 3 to 5 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 7 and 12 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 15 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 1 and 4 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation is expected to change over to rain or a rain/snow mix Tuesday afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-24 12:43:50 677 WWUS45 KRIW 241843 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1143 AM MST Tue Feb 24 2026 WYZ001-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 10 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 4 to 8 inches in central portions of Yellowstone, and up to 3 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Additional snow accumulations 12 to 18 inches over the western half of the Absaroka Range, with 4 to 8 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 12 to 22 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 3 to 5 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 7 and 12 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 15 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 1 and 4 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation is expected to change over to rain or a rain/snow mix Tuesday afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-24 12:43:50 677 WWUS45 KRIW 241843 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1143 AM MST Tue Feb 24 2026 WYZ001-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 10 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 4 to 8 inches in central portions of Yellowstone, and up to 3 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Additional snow accumulations 12 to 18 inches over the western half of the Absaroka Range, with 4 to 8 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 12 to 22 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 3 to 5 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 7 and 12 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 15 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 1 and 4 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation is expected to change over to rain or a rain/snow mix Tuesday afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-24 12:43:50 677 WWUS45 KRIW 241843 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1143 AM MST Tue Feb 24 2026 WYZ001-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 10 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 4 to 8 inches in central portions of Yellowstone, and up to 3 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Additional snow accumulations 12 to 18 inches over the western half of the Absaroka Range, with 4 to 8 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ012-024-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Additional snow accumulations 12 to 22 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Snowfall rates up to 2"/hr will be possible Tuesday afternoon. Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-251400- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1143 AM MST Tue Feb 24 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 3 to 5 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ008-009-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 7 and 12 inches across the north half of the range, from about Powder River Pass and north. Locally higher amounts up to 15 inches possible. Winds gusting as high as 40 mph Tuesday afternoon, with gusts up to 60 mph on the east slopes Wednesday afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ013-251400- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 1143 AM MST Tue Feb 24 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow expected. Additional snow accumulations between 1 and 4 inches. Highest totals are expected across the northern valley, from Moose to Moran Junction. Winds gusting as high as 30 mph Tuesday, increasing to 45 mph Wednesday. * WHERE...Jackson Hole. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation is expected to change over to rain or a rain/snow mix Tuesday afternoon and last through much of the night Tuesday night. Rain will then change back over to snow by Wednesday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann Action: Continued Issued At: 2026-02-25 02:31:43 587 WWUS45 KRIW 250831 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 131 AM MST Wed Feb 25 2026 WYZ013-250945- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Precipitation is forecast to fall largely as rain across Jackson Hole Valley. Occasional periods of a rain/snow mix is possible with minimal accumulations. Gusty 25 to 35 mph west winds are expected throughout the day. $$ WYZ001-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Old Faithful, Lake, and Mammoth 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 5 to 10 inches over the Pitchstone Plateau, with isolated amounts up to 12 inches. An additional 2 to 5 inches across central portions of Yellowstone and up to 1 inch in Lamar Valley and Mammoth. Gusty west winds of 20 to 35 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow possible. Additional snow accumulations 6 to 10 inches over the western half of the Absarokas and 2 to 6 inches over the eastern half. West winds of 35 to 45 mph, with gusts of 55 to 70 mph. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 6 to 12 inches, with isolated higher amounts up to 15 inches. West winds with frequent gusts of 40 to 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning commute, especially over Teton and Togwotee Passes. * ADDITIONAL DETAILS...Snowfall rates will generally be between 0.5 and 1 inches per hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow expected. Additional snow accumulations of 9 to 15 inches for elevations above 9,500 feet AGL. 2 to 4 inches possible over South Pass. Gusty west winds around 60 mph will be common, including over South Pass. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday morning commute. * ADDITIONAL DETAILS...For South Pass, the most likely period of heavy snow will occur before 11AM MST. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ008-009-260000- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 4 to 6 inches from Powder River Pass and north. The highest elevations could have an additional 9 inches. Gusty west to northwest winds up to 60 mph through the afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Gerhardt Action: Continued Issued At: 2026-02-25 02:31:43 587 WWUS45 KRIW 250831 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 131 AM MST Wed Feb 25 2026 WYZ013-250945- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Precipitation is forecast to fall largely as rain across Jackson Hole Valley. Occasional periods of a rain/snow mix is possible with minimal accumulations. Gusty 25 to 35 mph west winds are expected throughout the day. $$ WYZ001-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Old Faithful, Lake, and Mammoth 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 5 to 10 inches over the Pitchstone Plateau, with isolated amounts up to 12 inches. An additional 2 to 5 inches across central portions of Yellowstone and up to 1 inch in Lamar Valley and Mammoth. Gusty west winds of 20 to 35 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow possible. Additional snow accumulations 6 to 10 inches over the western half of the Absarokas and 2 to 6 inches over the eastern half. West winds of 35 to 45 mph, with gusts of 55 to 70 mph. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 6 to 12 inches, with isolated higher amounts up to 15 inches. West winds with frequent gusts of 40 to 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning commute, especially over Teton and Togwotee Passes. * ADDITIONAL DETAILS...Snowfall rates will generally be between 0.5 and 1 inches per hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow expected. Additional snow accumulations of 9 to 15 inches for elevations above 9,500 feet AGL. 2 to 4 inches possible over South Pass. Gusty west winds around 60 mph will be common, including over South Pass. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday morning commute. * ADDITIONAL DETAILS...For South Pass, the most likely period of heavy snow will occur before 11AM MST. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ008-009-260000- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 4 to 6 inches from Powder River Pass and north. The highest elevations could have an additional 9 inches. Gusty west to northwest winds up to 60 mph through the afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Gerhardt Action: Continued Issued At: 2026-02-25 02:31:43 587 WWUS45 KRIW 250831 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 131 AM MST Wed Feb 25 2026 WYZ013-250945- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Precipitation is forecast to fall largely as rain across Jackson Hole Valley. Occasional periods of a rain/snow mix is possible with minimal accumulations. Gusty 25 to 35 mph west winds are expected throughout the day. $$ WYZ001-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Old Faithful, Lake, and Mammoth 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 5 to 10 inches over the Pitchstone Plateau, with isolated amounts up to 12 inches. An additional 2 to 5 inches across central portions of Yellowstone and up to 1 inch in Lamar Valley and Mammoth. Gusty west winds of 20 to 35 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow possible. Additional snow accumulations 6 to 10 inches over the western half of the Absarokas and 2 to 6 inches over the eastern half. West winds of 35 to 45 mph, with gusts of 55 to 70 mph. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 6 to 12 inches, with isolated higher amounts up to 15 inches. West winds with frequent gusts of 40 to 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning commute, especially over Teton and Togwotee Passes. * ADDITIONAL DETAILS...Snowfall rates will generally be between 0.5 and 1 inches per hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow expected. Additional snow accumulations of 9 to 15 inches for elevations above 9,500 feet AGL. 2 to 4 inches possible over South Pass. Gusty west winds around 60 mph will be common, including over South Pass. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday morning commute. * ADDITIONAL DETAILS...For South Pass, the most likely period of heavy snow will occur before 11AM MST. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ008-009-260000- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 4 to 6 inches from Powder River Pass and north. The highest elevations could have an additional 9 inches. Gusty west to northwest winds up to 60 mph through the afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Gerhardt Action: Continued Issued At: 2026-02-25 02:31:43 587 WWUS45 KRIW 250831 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 131 AM MST Wed Feb 25 2026 WYZ013-250945- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Precipitation is forecast to fall largely as rain across Jackson Hole Valley. Occasional periods of a rain/snow mix is possible with minimal accumulations. Gusty 25 to 35 mph west winds are expected throughout the day. $$ WYZ001-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park- Including the cities of Old Faithful, Lake, and Mammoth 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 5 to 10 inches over the Pitchstone Plateau, with isolated amounts up to 12 inches. An additional 2 to 5 inches across central portions of Yellowstone and up to 1 inch in Lamar Valley and Mammoth. Gusty west winds of 20 to 35 mph. * WHERE...Yellowstone National Park. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Backcountry travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ002-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Absaroka Mountains- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow possible. Additional snow accumulations 6 to 10 inches over the western half of the Absarokas and 2 to 6 inches over the eastern half. West winds of 35 to 45 mph, with gusts of 55 to 70 mph. * WHERE...Absaroka Mountains. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel will be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations of 6 to 12 inches, with isolated higher amounts up to 15 inches. West winds with frequent gusts of 40 to 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning commute, especially over Teton and Togwotee Passes. * ADDITIONAL DETAILS...Snowfall rates will generally be between 0.5 and 1 inches per hour. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 131 AM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow expected. Additional snow accumulations of 9 to 15 inches for elevations above 9,500 feet AGL. 2 to 4 inches possible over South Pass. Gusty west winds around 60 mph will be common, including over South Pass. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday morning commute. * ADDITIONAL DETAILS...For South Pass, the most likely period of heavy snow will occur before 11AM MST. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ008-009-260000- /O.CON.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 131 AM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 4 to 6 inches from Powder River Pass and north. The highest elevations could have an additional 9 inches. Gusty west to northwest winds up to 60 mph through the afternoon. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Gerhardt Action: Continued Issued At: 2026-02-25 13:13:21 035 WWUS45 KRIW 251913 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1213 PM MST Wed Feb 25 2026 WYZ001-002-252015- /O.CAN.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Old Faithful, Lake, and Mammoth 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING IS CANCELLED... Isolated showers are expected to linger across the area through the afternoon and evening with little additional snow accumulation expected. Strong gusty winds continue with periodic gusts in excess of 50 mph possible at times. $$ WYZ008-009-252015- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1213 PM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Isolated showers are expected to linger across the area through the afternoon and evening with little additional snow accumulation expected. Strong gusty winds continue with periodic gusts in excess of 50 mph possible at times. $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday commute, especially over Teton and Togwotee Passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Dziewaltowski Action: Continued Issued At: 2026-02-25 13:13:21 035 WWUS45 KRIW 251913 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1213 PM MST Wed Feb 25 2026 WYZ001-002-252015- /O.CAN.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Old Faithful, Lake, and Mammoth 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING IS CANCELLED... Isolated showers are expected to linger across the area through the afternoon and evening with little additional snow accumulation expected. Strong gusty winds continue with periodic gusts in excess of 50 mph possible at times. $$ WYZ008-009-252015- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1213 PM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Isolated showers are expected to linger across the area through the afternoon and evening with little additional snow accumulation expected. Strong gusty winds continue with periodic gusts in excess of 50 mph possible at times. $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday commute, especially over Teton and Togwotee Passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Dziewaltowski Action: Cancelled Issued At: 2026-02-25 13:13:21 035 WWUS45 KRIW 251913 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1213 PM MST Wed Feb 25 2026 WYZ001-002-252015- /O.CAN.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Old Faithful, Lake, and Mammoth 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING IS CANCELLED... Isolated showers are expected to linger across the area through the afternoon and evening with little additional snow accumulation expected. Strong gusty winds continue with periodic gusts in excess of 50 mph possible at times. $$ WYZ008-009-252015- /O.CAN.KRIW.WW.Y.0009.000000T0000Z-260226T0000Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1213 PM MST Wed Feb 25 2026 ...WINTER WEATHER ADVISORY IS CANCELLED... Isolated showers are expected to linger across the area through the afternoon and evening with little additional snow accumulation expected. Strong gusty winds continue with periodic gusts in excess of 50 mph possible at times. $$ WYZ012-024-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 50 mph. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday commute, especially over Teton and Togwotee Passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ WYZ014-260000- /O.CON.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Wind River Mountains West- 1213 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Heavy snow. Additional snow accumulations up to 3 inches. Winds gusting as high as 60 mph. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Wednesday commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Dziewaltowski Action: Expired Issued At: 2026-02-25 17:48:28 874 WWUS45 KRIW 252347 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 447 PM MST Wed Feb 25 2026 WYZ012-014-024-260100- /O.EXP.KRIW.WS.W.0002.000000T0000Z-260226T0000Z/ Teton and Gros Ventre Mountains-Wind River Mountains West-Salt River and Wyoming Ranges- 447 PM MST Wed Feb 25 2026 ...WINTER STORM WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON... The threat has ended. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Lowe | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||