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Home Return to list Freeze Warning 0002 Issued by the Cheyenne Forecast Office
Action: New Issued At: 2026-05-18 02:15:47 885 WWUS75 KCYS 180715 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 115 AM MDT Mon May 18 2026 WYZ102-182230- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ /O.CON.KCYS.FZ.W.0001.260518T1100Z-260518T1600Z/ Niobrara County- Including the cities of Redbird and Lusk 115 AM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 5 AM TO 10 AM MDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...For the Freeze Warning early this morning, sub-freezing temperatures as low as 26 expected. For the Freeze Warning tomorrow night, sub-freezing temperatures as low as 22 possible. * WHERE...Niobrara County. * WHEN...For the first Freeze Warning, from 5 AM to 10 AM MDT this morning. For the second Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ101-107-108-182230- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-East Platte County-Goshen County- Including the cities of Scottsbluff, Wheatland, Glenrock, Gering, Agate, Torrington, Bill, Deer Creek, Guernsey, Douglas, and Harrison 115 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...Portions of the panhandle of Nebraska, and east central and southeast Wyoming. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-182230- /O.CON.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Elk Mountain, Arlington, Medicine Bow, Shirley Basin, Baggs, Seminoe Dam, and Rawlins 115 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 15 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...From this evening through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-WYZ106-113-115>119-182230- /O.CON.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County-Central Laramie Range and Southwest Platte County-Upper North Platte River Basin-Laramie Valley-South Laramie Range-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Bridgeport, Chadron St Park, Bordeaux, Horse Creek, Bosler, Federal, Redington, Whitaker, Saratoga, Laramie, Buford, Pine Bluffs, Hemingford, Vedauwoo, Sidney, Alliance, Brownson, Angora, Cheyenne, Kimball, Harrisburg, Chadron, Bayard, Encampment, and Pumpkin Vine 115 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 16 possible. * WHERE...Portions of panhandle Nebraska and south central and southeast Wyoming. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: New Issued At: 2026-05-18 02:15:47 885 WWUS75 KCYS 180715 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 115 AM MDT Mon May 18 2026 WYZ102-182230- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ /O.CON.KCYS.FZ.W.0001.260518T1100Z-260518T1600Z/ Niobrara County- Including the cities of Redbird and Lusk 115 AM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 5 AM TO 10 AM MDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...For the Freeze Warning early this morning, sub-freezing temperatures as low as 26 expected. For the Freeze Warning tomorrow night, sub-freezing temperatures as low as 22 possible. * WHERE...Niobrara County. * WHEN...For the first Freeze Warning, from 5 AM to 10 AM MDT this morning. For the second Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ101-107-108-182230- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-East Platte County-Goshen County- Including the cities of Scottsbluff, Wheatland, Glenrock, Gering, Agate, Torrington, Bill, Deer Creek, Guernsey, Douglas, and Harrison 115 AM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...Portions of the panhandle of Nebraska, and east central and southeast Wyoming. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-182230- /O.CON.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Elk Mountain, Arlington, Medicine Bow, Shirley Basin, Baggs, Seminoe Dam, and Rawlins 115 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 15 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...From this evening through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-WYZ106-113-115>119-182230- /O.CON.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County-Central Laramie Range and Southwest Platte County-Upper North Platte River Basin-Laramie Valley-South Laramie Range-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Bridgeport, Chadron St Park, Bordeaux, Horse Creek, Bosler, Federal, Redington, Whitaker, Saratoga, Laramie, Buford, Pine Bluffs, Hemingford, Vedauwoo, Sidney, Alliance, Brownson, Angora, Cheyenne, Kimball, Harrisburg, Chadron, Bayard, Encampment, and Pumpkin Vine 115 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 16 possible. * WHERE...Portions of panhandle Nebraska and south central and southeast Wyoming. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Continued Issued At: 2026-05-18 10:33:46 872 WWUS75 KCYS 181533 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 933 AM MDT Mon May 18 2026 WYZ102-182200- /O.EXP.KCYS.FZ.W.0001.000000T0000Z-260518T1600Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Niobrara County- Including the cities of Redbird and Lusk 933 AM MDT Mon May 18 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...For the Freeze Warning tomorrow night, sub-freezing temperatures as low as 22 possible. * WHERE...Niobrara County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ101-107-108-182200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-East Platte County-Goshen County- Including the cities of Gering, Glenrock, Wheatland, Scottsbluff, Torrington, Deer Creek, Harrison, Bill, Douglas, Agate, and Guernsey 933 AM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Portions of the panhandle of Nebraska, and east central and southeast Wyoming. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-182200- /O.CON.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 933 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 15 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...From 9 PM MDT this evening through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-WYZ106-113-115>119-182200- /O.CON.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County-Central Laramie Range and Southwest Platte County-Upper North Platte River Basin-Laramie Valley-South Laramie Range-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Harrisburg, Vedauwoo, Federal, Hemingford, Pumpkin Vine, Laramie, Bordeaux, Alliance, Brownson, Horse Creek, Bayard, Sidney, Encampment, Kimball, Cheyenne, Bridgeport, Pine Bluffs, Buford, Redington, Angora, Chadron, Whitaker, Bosler, Chadron St Park, and Saratoga 933 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 16 possible. * WHERE...Portions of panhandle Nebraska and south central and southeast Wyoming. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Continued Issued At: 2026-05-18 10:33:46 872 WWUS75 KCYS 181533 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 933 AM MDT Mon May 18 2026 WYZ102-182200- /O.EXP.KCYS.FZ.W.0001.000000T0000Z-260518T1600Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Niobrara County- Including the cities of Redbird and Lusk 933 AM MDT Mon May 18 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...For the Freeze Warning tomorrow night, sub-freezing temperatures as low as 22 possible. * WHERE...Niobrara County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ101-107-108-182200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-East Platte County-Goshen County- Including the cities of Gering, Glenrock, Wheatland, Scottsbluff, Torrington, Deer Creek, Harrison, Bill, Douglas, Agate, and Guernsey 933 AM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Portions of the panhandle of Nebraska, and east central and southeast Wyoming. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-182200- /O.CON.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 933 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 15 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...From 9 PM MDT this evening through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-WYZ106-113-115>119-182200- /O.CON.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County-Central Laramie Range and Southwest Platte County-Upper North Platte River Basin-Laramie Valley-South Laramie Range-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Harrisburg, Vedauwoo, Federal, Hemingford, Pumpkin Vine, Laramie, Bordeaux, Alliance, Brownson, Horse Creek, Bayard, Sidney, Encampment, Kimball, Cheyenne, Bridgeport, Pine Bluffs, Buford, Redington, Angora, Chadron, Whitaker, Bosler, Chadron St Park, and Saratoga 933 AM MDT Mon May 18 2026 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 16 possible. * WHERE...Portions of panhandle Nebraska and south central and southeast Wyoming. * WHEN...From late tonight through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Time and Area Extended Issued At: 2026-05-18 14:01:06 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Area Extended Issued At: 2026-05-18 14:01:06 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Time and Area Extended Issued At: 2026-05-18 14:01:06 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Time and Area Extended Issued At: 2026-05-18 14:01:06 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Area Extended Issued At: 2026-05-18 14:01:07 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Continued Issued At: 2026-05-18 14:01:07 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Continued Issued At: 2026-05-18 14:01:07 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Area Extended Issued At: 2026-05-18 14:01:07 822 WWUS75 KCYS 181900 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MDT Mon May 18 2026 WYZ104-105-109>111-191200- /O.UPG.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0000Z-260519T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Medicine Bow, Rawlins, Elk Mountain, Arlington, Shirley Basin, Seminoe Dam, and Baggs 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, from 6 PM this evening to noon MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, from midnight tonight to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXB.KCYS.FZ.W.0002.260519T0600Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Harrisburg, Kimball, Chadron St Park, Bridgeport, Hemingford, Alliance, Redington, Angora, Chadron, Bayard, Sidney, and Brownson 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...From midnight tonight to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ115-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Laramie Valley- Including the cities of Laramie and Bosler 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 17 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 26 possible. * WHERE...Laramie Valley. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.NEW.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ South Laramie Range- Including the cities of Vedauwoo, Pumpkin Vine, and Buford 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 above expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from Tuesday evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ106-117>119-191200- /O.UPG.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/ /O.EXA.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Central Laramie Range and Southwest Platte County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Whitaker, Bordeaux, Cheyenne, Pine Bluffs, Federal, and Horse Creek 100 PM MDT Mon May 18 2026 ...FREEZE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 20 expected. * WHERE...Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, and South Laramie Range Foothills. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-191200- /O.NEW.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Converse County Lower Elevations- Including the cities of Deer Creek, Douglas, Bill, and Glenrock 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 16 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations. * WHEN...For the Freeze Warning, from 8 PM this evening to 10 AM MDT Tuesday. For the Freeze Watch, from late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-107-108-191200- /O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-East Platte County-Goshen County- Including the cities of Gering, Wheatland, Scottsbluff, Torrington, Harrison, Agate, Lusk, Guernsey, and Redbird 100 PM MDT Mon May 18 2026 ...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY... * WHAT...Sub-freezing temperatures as low as 21 expected. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, East Platte County, and Goshen County. * WHEN...From 8 PM this evening to 10 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Continued Issued At: 2026-05-19 01:43:14 714 WWUS75 KCYS 190642 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1242 AM MDT Tue May 19 2026 WYZ101-115-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Bill, Glenrock, Douglas, Deer Creek, Laramie, and Bosler 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 15 degrees. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Baggs, Rawlins, Medicine Bow, Shirley Basin, Elk Mountain, and Arlington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 degrees expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Bridgeport, Bayard, Sidney, Chadron, Angora, Redington, Kimball, Chadron St Park, Alliance, Hemingford, Brownson, and Harrisburg 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-106>108-117>119-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Pine Bluffs, Scottsbluff, Whitaker, Harrison, Bordeaux, Guernsey, Federal, Lusk, Wheatland, Horse Creek, Agate, Gering, Redbird, Cheyenne, and Torrington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 degrees. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, and South Laramie Range Foothills. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Continued Issued At: 2026-05-19 01:43:14 714 WWUS75 KCYS 190642 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1242 AM MDT Tue May 19 2026 WYZ101-115-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Bill, Glenrock, Douglas, Deer Creek, Laramie, and Bosler 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 15 degrees. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Baggs, Rawlins, Medicine Bow, Shirley Basin, Elk Mountain, and Arlington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 degrees expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Bridgeport, Bayard, Sidney, Chadron, Angora, Redington, Kimball, Chadron St Park, Alliance, Hemingford, Brownson, and Harrisburg 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-106>108-117>119-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Pine Bluffs, Scottsbluff, Whitaker, Harrison, Bordeaux, Guernsey, Federal, Lusk, Wheatland, Horse Creek, Agate, Gering, Redbird, Cheyenne, and Torrington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 degrees. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, and South Laramie Range Foothills. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Continued Issued At: 2026-05-19 01:43:14 714 WWUS75 KCYS 190642 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1242 AM MDT Tue May 19 2026 WYZ101-115-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Bill, Glenrock, Douglas, Deer Creek, Laramie, and Bosler 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 15 degrees. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Baggs, Rawlins, Medicine Bow, Shirley Basin, Elk Mountain, and Arlington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 degrees expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Bridgeport, Bayard, Sidney, Chadron, Angora, Redington, Kimball, Chadron St Park, Alliance, Hemingford, Brownson, and Harrisburg 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-106>108-117>119-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Pine Bluffs, Scottsbluff, Whitaker, Harrison, Bordeaux, Guernsey, Federal, Lusk, Wheatland, Horse Creek, Agate, Gering, Redbird, Cheyenne, and Torrington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 degrees. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, and South Laramie Range Foothills. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Continued Issued At: 2026-05-19 01:43:14 714 WWUS75 KCYS 190642 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1242 AM MDT Tue May 19 2026 WYZ101-115-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Bill, Glenrock, Douglas, Deer Creek, Laramie, and Bosler 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 15 degrees. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Baggs, Rawlins, Medicine Bow, Shirley Basin, Elk Mountain, and Arlington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 degrees expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Bridgeport, Bayard, Sidney, Chadron, Angora, Redington, Kimball, Chadron St Park, Alliance, Hemingford, Brownson, and Harrisburg 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-106>108-117>119-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Pine Bluffs, Scottsbluff, Whitaker, Harrison, Bordeaux, Guernsey, Federal, Lusk, Wheatland, Horse Creek, Agate, Gering, Redbird, Cheyenne, and Torrington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 degrees. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, and South Laramie Range Foothills. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Continued Issued At: 2026-05-19 01:43:14 714 WWUS75 KCYS 190642 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1242 AM MDT Tue May 19 2026 WYZ101-115-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Bill, Glenrock, Douglas, Deer Creek, Laramie, and Bosler 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 15 degrees. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Baggs, Rawlins, Medicine Bow, Shirley Basin, Elk Mountain, and Arlington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 degrees expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Bridgeport, Bayard, Sidney, Chadron, Angora, Redington, Kimball, Chadron St Park, Alliance, Hemingford, Brownson, and Harrisburg 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-106>108-117>119-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Pine Bluffs, Scottsbluff, Whitaker, Harrison, Bordeaux, Guernsey, Federal, Lusk, Wheatland, Horse Creek, Agate, Gering, Redbird, Cheyenne, and Torrington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 degrees. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, and South Laramie Range Foothills. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Continued Issued At: 2026-05-19 01:43:14 714 WWUS75 KCYS 190642 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1242 AM MDT Tue May 19 2026 WYZ101-115-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Bill, Glenrock, Douglas, Deer Creek, Laramie, and Bosler 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 15 degrees. For the Freeze Watch, sub-freezing temperatures as low as 20 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ104-105-109>111-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Baggs, Rawlins, Medicine Bow, Shirley Basin, Elk Mountain, and Arlington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 18 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin- Including the cities of Encampment and Saratoga 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 18 degrees expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 20 possible. * WHERE...Upper North Platte River Basin. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ116-192100- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ South Laramie Range- Including the cities of Buford, Vedauwoo, and Pumpkin Vine 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning tonight, sub-freezing temperatures as low as 12 degrees above zero expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 23 possible. * WHERE...South Laramie Range. * WHEN...For the Freeze Warning, until 10 AM MDT this morning. For the Freeze Watch, from this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-020-021-054-055-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Banner County-Morrill County- Kimball County-Cheyenne County- Including the cities of Bridgeport, Bayard, Sidney, Chadron, Angora, Redington, Kimball, Chadron St Park, Alliance, Hemingford, Brownson, and Harrisburg 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 25 expected. * WHERE...Banner County, Box Butte County, Cheyenne County, Dawes County, Kimball County, and Morrill County. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ019-095-096-WYZ102-106>108-117>119-191600- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Scotts Bluff County-Northern Sioux County-Southern Sioux County- Niobrara County-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Pine Bluffs, Scottsbluff, Whitaker, Harrison, Bordeaux, Guernsey, Federal, Lusk, Wheatland, Horse Creek, Agate, Gering, Redbird, Cheyenne, and Torrington 1242 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM MDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 degrees. * WHERE...In Nebraska, Northern Sioux County, Scotts Bluff County, and Southern Sioux County. In Wyoming, Niobrara County, Central Laramie County, Central Laramie Range and Southwest Platte County, East Laramie County, East Platte County, Goshen County, and South Laramie Range Foothills. * WHEN...Until 10 AM MDT this morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Trudel Action: Expired Issued At: 2026-05-19 10:48:20 218 WWUS75 KCYS 191547 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 947 AM MDT Tue May 19 2026 WYZ101-115-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Douglas, Glenrock, Bill, Bosler, Laramie, and Deer Creek 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...From late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-116-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin-South Laramie Range- Including the cities of Buford, Encampment, Pumpkin Vine, Vedauwoo, and Saratoga 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 19 possible. * WHERE...Upper North Platte River Basin and South Laramie Range. * WHEN...From 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-019>021-054-055-095-096-WYZ102-106>108-117>119-191700- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County-Northern Sioux County-Southern Sioux County-Niobrara County-Central Laramie Range and Southwest Platte County-East Platte County-Goshen County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Sidney, Torrington, Agate, Pine Bluffs, Gering, Chadron, Bordeaux, Wheatland, Alliance, Horse Creek, Redbird, Kimball, Cheyenne, Angora, Guernsey, Harrison, Lusk, Hemingford, Federal, Bayard, Whitaker, Harrisburg, Bridgeport, Redington, Chadron St Park, Scottsbluff, and Brownson 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... Temperatures have risen above freezing levels. Therefore the Freeze Warning will be allowed to end. $$ WYZ104-105-109>111-191800- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Arlington, Rawlins, Baggs, Medicine Bow, Elk Mountain, and Shirley Basin 947 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning this morning, sub-freezing temperatures as low as 20 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 16 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Continued Issued At: 2026-05-19 10:48:20 218 WWUS75 KCYS 191547 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 947 AM MDT Tue May 19 2026 WYZ101-115-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Douglas, Glenrock, Bill, Bosler, Laramie, and Deer Creek 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...From late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-116-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin-South Laramie Range- Including the cities of Buford, Encampment, Pumpkin Vine, Vedauwoo, and Saratoga 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 19 possible. * WHERE...Upper North Platte River Basin and South Laramie Range. * WHEN...From 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-019>021-054-055-095-096-WYZ102-106>108-117>119-191700- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County-Northern Sioux County-Southern Sioux County-Niobrara County-Central Laramie Range and Southwest Platte County-East Platte County-Goshen County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Sidney, Torrington, Agate, Pine Bluffs, Gering, Chadron, Bordeaux, Wheatland, Alliance, Horse Creek, Redbird, Kimball, Cheyenne, Angora, Guernsey, Harrison, Lusk, Hemingford, Federal, Bayard, Whitaker, Harrisburg, Bridgeport, Redington, Chadron St Park, Scottsbluff, and Brownson 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... Temperatures have risen above freezing levels. Therefore the Freeze Warning will be allowed to end. $$ WYZ104-105-109>111-191800- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Arlington, Rawlins, Baggs, Medicine Bow, Elk Mountain, and Shirley Basin 947 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning this morning, sub-freezing temperatures as low as 20 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 16 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Expired Issued At: 2026-05-19 10:48:20 218 WWUS75 KCYS 191547 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 947 AM MDT Tue May 19 2026 WYZ101-115-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Douglas, Glenrock, Bill, Bosler, Laramie, and Deer Creek 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...From late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-116-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin-South Laramie Range- Including the cities of Buford, Encampment, Pumpkin Vine, Vedauwoo, and Saratoga 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 19 possible. * WHERE...Upper North Platte River Basin and South Laramie Range. * WHEN...From 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-019>021-054-055-095-096-WYZ102-106>108-117>119-191700- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County-Northern Sioux County-Southern Sioux County-Niobrara County-Central Laramie Range and Southwest Platte County-East Platte County-Goshen County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Sidney, Torrington, Agate, Pine Bluffs, Gering, Chadron, Bordeaux, Wheatland, Alliance, Horse Creek, Redbird, Kimball, Cheyenne, Angora, Guernsey, Harrison, Lusk, Hemingford, Federal, Bayard, Whitaker, Harrisburg, Bridgeport, Redington, Chadron St Park, Scottsbluff, and Brownson 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... Temperatures have risen above freezing levels. Therefore the Freeze Warning will be allowed to end. $$ WYZ104-105-109>111-191800- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Arlington, Rawlins, Baggs, Medicine Bow, Elk Mountain, and Shirley Basin 947 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning this morning, sub-freezing temperatures as low as 20 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 16 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Expired Issued At: 2026-05-19 10:48:20 218 WWUS75 KCYS 191547 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 947 AM MDT Tue May 19 2026 WYZ101-115-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Douglas, Glenrock, Bill, Bosler, Laramie, and Deer Creek 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...From late tonight through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-116-191800- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Upper North Platte River Basin-South Laramie Range- Including the cities of Buford, Encampment, Pumpkin Vine, Vedauwoo, and Saratoga 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Watch, sub-freezing temperatures as low as 19 possible. * WHERE...Upper North Platte River Basin and South Laramie Range. * WHEN...From 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ002-003-019>021-054-055-095-096-WYZ102-106>108-117>119-191700- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1600Z/ Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County-Northern Sioux County-Southern Sioux County-Niobrara County-Central Laramie Range and Southwest Platte County-East Platte County-Goshen County-South Laramie Range Foothills-Central Laramie County-East Laramie County- Including the cities of Sidney, Torrington, Agate, Pine Bluffs, Gering, Chadron, Bordeaux, Wheatland, Alliance, Horse Creek, Redbird, Kimball, Cheyenne, Angora, Guernsey, Harrison, Lusk, Hemingford, Federal, Bayard, Whitaker, Harrisburg, Bridgeport, Redington, Chadron St Park, Scottsbluff, and Brownson 947 AM MDT Tue May 19 2026 ...FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING... Temperatures have risen above freezing levels. Therefore the Freeze Warning will be allowed to end. $$ WYZ104-105-109>111-191800- /O.CON.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.CON.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Seminoe Dam, Arlington, Rawlins, Baggs, Medicine Bow, Elk Mountain, and Shirley Basin 947 AM MDT Tue May 19 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... ...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH WEDNESDAY MORNING... * WHAT...For the Freeze Warning this morning, sub-freezing temperatures as low as 20 expected. For the Freeze Watch Tuesday night, sub-freezing temperatures as low as 16 possible. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...For the Freeze Warning, until noon MDT today. For the Freeze Watch, from 9 PM MDT this evening through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ CG Action: Expired Issued At: 2026-05-19 12:40:54 924 WWUS75 KCYS 191740 NPWCYS URGENT - WEATHER MESSAGE National Weather Service Cheyenne WY 1140 AM MDT Tue May 19 2026 WYZ104-105-109>111-201200- /O.EXP.KCYS.FZ.W.0002.000000T0000Z-260519T1800Z/ /O.UPG.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.NEW.KCYS.FZ.W.0003.260520T0300Z-260520T1600Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin-Central Carbon County-North Snowy Range Foothills-Southwest Carbon County- Including the cities of Rawlins, Baggs, Medicine Bow, Seminoe Dam, Elk Mountain, Arlington, and Shirley Basin 1140 AM MDT Tue May 19 2026 ...FREEZE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 10 AM MDT WEDNESDAY... ...FREEZE WARNING WILL EXPIRE AT NOON MDT TODAY... * WHAT...Sub-freezing temperatures between 15 and 25 degrees expected. * WHERE...Central Carbon County, Ferris/Seminoe/Shirley Mountains, North Snowy Range Foothills, Shirley Basin, and Southwest Carbon County. * WHEN...From 9 PM this evening to 10 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ113-116-201200- /O.UPG.KCYS.FZ.A.0002.260520T0300Z-260520T1600Z/ /O.NEW.KCYS.FZ.W.0003.260520T0300Z-260520T1600Z/ Upper North Platte River Basin-South Laramie Range- Including the cities of Vedauwoo, Buford, Saratoga, Encampment, and Pumpkin Vine 1140 AM MDT Tue May 19 2026 ...FREEZE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 10 AM MDT WEDNESDAY... * WHAT...Sub-freezing temperatures between 20 and 30 degrees expected. * WHERE...Upper North Platte River Basin and South Laramie Range. * WHEN...From 9 PM this evening to 10 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ WYZ101-115-201200- /O.UPG.KCYS.FZ.A.0002.260520T0600Z-260520T1400Z/ /O.NEW.KCYS.FZ.W.0003.260520T0600Z-260520T1400Z/ Converse County Lower Elevations-Laramie Valley- Including the cities of Douglas, Deer Creek, Laramie, Bill, Bosler, and Glenrock 1140 AM MDT Tue May 19 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT WEDNESDAY... * WHAT...Sub-freezing temperatures between 25 and 32 degrees expected. * WHERE...Converse County Lower Elevations and Laramie Valley. * WHEN...From midnight tonight to 8 AM MDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ NEZ095-WYZ102-106-107-117-201200- /O.NEW.KCYS.FR.Y.0001.260520T0600Z-260520T1400Z/ Northern Sioux County-Niobrara County-Central Laramie Range and Southwest Platte County-East Platte County-South Laramie Range Foothills- Including the cities of Guernsey, Federal, Bordeaux, Redbird, Harrison, Whitaker, Wheatland, Horse Creek, and Lusk 1140 AM MDT Tue May 19 2026 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 8 AM MDT WEDNESDAY... * WHAT...Temperatures as low as 28 will result in frost formation. * WHERE...In Nebraska, Northern Sioux County. In Wyoming, Niobrara County, Central Laramie Range and Southwest Platte County, East Platte County, and South Laramie Range Foothills. * WHEN...From midnight tonight to 8 AM MDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ MN | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||