Alert archive / Wyoming / Winter Storm Warnings in 2020
Winter Storm Warning 7, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Feb 24, 2020, 5:58 PM MST for Albany County, Converse County, Platte County, Wyoming. It was in force for 20 hr. 10 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Feb 24, 2020, 5:58 PM MST (00:58 UTC)
- Expired
- Feb 25, 2020, 2:23 PM MST
- In force
- 20 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Converse County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 132 km from the middle of the area, began a volume at 00:55 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 25, 5:00 AM MST | SNOW 8 | 1 Ssw Windy Peak, WY | WINDY PEAK SNOTEL. SNOW WATER EQUIVILENT OF 0.4 INCHES. 20 TO 1 RATIO USED. SNOWFALL OVER THE PAST 24 HOURS. |
| Feb 25, 5:00 AM MST | HEAVY SNOW 12 | 2 Sw Campbell Creek Cam, WY | LAPRELE CREEK SNOTEL IN THE NORTH LARAMIE RANGE. SNOW WATER EQUIVILENT OF 0.6 INCHES. 20 TO 1 RATIO USED. SNOWFALL OVER THE PAST 24 HOURS. |
| Feb 25, 5:38 AM MST | BLIZZARD | I-80 Summit, WY | BLIZZARD CONDITIONS WERE MET AT WY28 OR I-80 SUMMIT EAST AT THIS TIME WITH CONDITIONS STARTING AT 2:38 AM MST. CONDITIONS STILL MEETING CRITERIA AS OF 9 AM. |
| Feb 25, 6:00 AM MST | SNOW 0.7 | 4 Wsw Douglas, WY | COCORAHS STATION WY-CV-16 DOUGLAS 4.3 WSW. |
| Feb 25, 7:00 AM MST | SNOW 0.8 | 1 Nw Centennial, WY | COCORAHS STATION WY-AB-108 CENTENNIAL 1.1 NNE. |
| Feb 25, 7:00 AM MST | SNOW 1 | 12 Nw Lost Springs, WY | COCORAHS STATION WY-CV-11 LOST SPRINGS 11.9 NW. |
| Feb 25, 7:00 AM MST | SNOW 1 | 1 Wnw Glenrock, WY | COCORAHS STATION WY-CV-27 GLENROCK 0.6 WNW. |
| Feb 25, 7:00 AM MST | SNOW 1 | Guernsey, WY | COCORAHS STATION WY-PT-25 GUERNSEY 0.3 WSW. |
| Feb 25, 9:30 AM MST | HEAVY SNOW 24 | 21 Ene Shirley Basin, WY | |
| Feb 25, 1:00 PM MST | HEAVY SNOW 29 | 21 Ene Shirley Basin, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 1.0 hours before the alert went out and 262 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1903 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
345 WWUS45 KCYS 250058 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 558 PM MST Mon Feb 24 2020 ...SNOW AND BLOWING SNOW EXPECTED THIS AFTERNOON THROUGH TUESDAY ACROSS THE PINE RIDGE FROM CONVERSE COUNTY WYOMING EAST THROUGH THE NORTHERN NEBRASKA PANHANDLE... ...SNOW AND BLOWING SNOW WILL CONTINUE ACROSS THE NORTH LARAMIE, SNOWY, AND SIERRA MADRE MOUNTAIN RANGES THROUGH TUESDAY... ...SNOW AND BLOWING SNOW WILL ALSO DEVELOP ALONG A SMALL AREA IN EXTREME SOUTHEAST WYOMING AND THE SOUTHERN NEBRASKA PANHANDLE LATE TONIGHT INTO TUESDAY... WYZ103-251200- /O.UPG.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ /O.NEW.KCYS.WS.W.0007.200225T0058Z-200226T0300Z/ North Laramie Range- Including the city of Garrett 558 PM MST Mon Feb 24 2020 ...WINTER STORM WARNING IN EFFECT UNTIL 8 PM MST TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 8 to 10 inches. Winds gusting as high as 45 mph. * WHERE...North Laramie Mountain Range. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ002-095-WYZ101-102-251200- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Dawes-North Sioux-Converse County Lower Elevations- Niobrara County- Including the cities of Chadron, Chadron St Park, Harrison, Bill, Douglas, Deer Creek, Glenrock, Lusk, and Redbird 558 PM MST Mon Feb 24 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches. Blowing snow. Winds gusting as high as 30 to 40 mph. * WHERE...Converse, Niobrara, North Sioux, and Dawes Counties. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could also significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ112-114-251200- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 558 PM MST Mon Feb 24 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY... * WHAT...Snow. Additional snow accumulations of 2 to 5 inches. Blowing Snow. Low Wind Chills. Winds gusting as high as 40 mph. * WHERE...Sierra Madre, Snowy, and Northern Laramie Mountain Ranges. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ020-054-055-WYZ107-108-116>119-251200- /O.CON.KCYS.WW.Y.0016.200225T1200Z-200226T0300Z/ Banner-Kimball-Cheyenne-East Platte County-Goshen County- South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Harrisburg, Kimball, Brownson, Sidney, Wheatland, Guernsey, Torrington, Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, Horse Creek, Cheyenne, and Pine Bluffs 558 PM MST Mon Feb 24 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM TO 8 PM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 40 mph. * WHERE...Northern Laramie county, southern Platte and Goshen counties in Wyoming. The towns of Kimball, Harrison, and Sidney in the southern Nebraska panhandle. Snow amounts will be less in Cheyenne. * WHEN...From 5 AM to 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could also significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
4 follow-up statements
882 WWUS45 KCYS 251006 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 306 AM MST Tue Feb 25 2020 ...SNOW AND BLOWING SNOW EXPECTED THIS AFTERNOON THROUGH TUESDAY ACROSS THE PINE RIDGE FROM CONVERSE COUNTY WYOMING EAST THROUGH THE NORTHERN NEBRASKA PANHANDLE... ...SNOW AND BLOWING SNOW WILL CONTINUE ACROSS THE NORTH LARAMIE, SNOWY, AND SIERRA MADRE MOUNTAIN RANGES THROUGH TUESDAY... ...SNOW AND BLOWING SNOW WILL ALSO DEVELOP ALONG A SMALL AREA IN EXTREME SOUTHEAST WYOMING AND THE SOUTHERN NEBRASKA PANHANDLE LATE TONIGHT INTO TUESDAY... WYZ103-260300- /O.CON.KCYS.WS.W.0007.000000T0000Z-200226T0300Z/ North Laramie Range- Including the city of Garrett 306 AM MST Tue Feb 25 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of 8 to 10 inches. Winds gusting as high as 45 mph. * WHERE...North Laramie Mountain Range. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ002-095-WYZ101-102-260300- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Dawes-North Sioux-Converse County Lower Elevations- Niobrara County- Including the cities of Chadron, Chadron St Park, Harrison, Bill, Douglas, Deer Creek, Glenrock, Lusk, and Redbird 306 AM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches. Blowing snow. Winds gusting as high as 30 to 40 mph. * WHERE...Converse, Niobrara, North Sioux, and Dawes Counties. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could also significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ020-054-055-WYZ107-108-116>119-260300- /O.CON.KCYS.WW.Y.0016.200225T1200Z-200226T0300Z/ Banner-Kimball-Cheyenne-East Platte County-Goshen County- South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Harrisburg, Kimball, Brownson, Sidney, Wheatland, Guernsey, Torrington, Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, Horse Creek, Cheyenne, and Pine Bluffs 306 AM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Winds gusting as high as 40 mph. * WHERE...Northern Laramie county, southern Platte and Goshen counties in Wyoming. The towns of Kimball, Harrison, and Sidney in the southern Nebraska panhandle. Snow amounts will be less in Cheyenne. * WHEN...From 5 AM to 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could also significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ112-114-260300- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 306 AM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of 2 to 5 inches. Blowing Snow. Low Wind Chills. Winds gusting as high as 40 mph. * WHERE...Sierra Madre, Snowy, and Northern Laramie Mountain Ranges. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
011 WWUS45 KCYS 251626 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 926 AM MST Tue Feb 25 2020 ...SNOW AND BLOWING SNOW EXPECTED THIS AFTERNOON THROUGH TUESDAY ACROSS THE PINE RIDGE FROM CONVERSE COUNTY WYOMING EAST THROUGH THE NORTHERN NEBRASKA PANHANDLE... ...SNOW AND BLOWING SNOW WILL CONTINUE ACROSS THE NORTH LARAMIE, SNOWY, AND SIERRA MADRE MOUNTAIN RANGES THROUGH TUESDAY... ...SNOW AND BLOWING SNOW WILL ALSO DEVELOP ALONG A SMALL AREA IN EXTREME SOUTHEAST WYOMING AND THE SOUTHERN NEBRASKA PANHANDLE LATE TONIGHT INTO TUESDAY... ...BLIZZARD WARNING FOR THE I-80 SUMMIT UNTIL 1PM... WYZ116-260030- /O.UPG.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ /O.NEW.KCYS.BZ.W.0006.200225T1626Z-200225T2000Z/ /O.NEW.KCYS.WW.Y.0017.200225T2000Z-200226T0300Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 926 AM MST Tue Feb 25 2020 ...BLIZZARD WARNING IN EFFECT UNTIL 1 PM MST THIS AFTERNOON... ...WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 8 PM MST THIS EVENING... * WHAT...Ground blizzard conditions. Winds gusting as high as 40 mph. For the Winter Weather Advisory, snow and blowing snow expected. Total snow accumulations of up to one inch. * WHERE...i-80 summit between mile markers 320 and 330. * WHEN...For the Blizzard Warning, until 1 PM MST this afternoon. For the Winter Weather Advisory, from 1 PM this afternoon to 8 PM MST this evening. * IMPACTS...Areas of blowing snow will cause whiteout conditions until 1pm. Blowing snow will also possible during the afternoon into the early evening. The cold wind chills as low as 15 below zero could result in hypothermia if precautions are not taken. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. Please avoid traveling in this area. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-260030- /O.CON.KCYS.WS.W.0007.000000T0000Z-200226T0300Z/ North Laramie Range- Including the city of Garrett 926 AM MST Tue Feb 25 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of 8 to 10 inches. Winds gusting as high as 45 mph. * WHERE...North Laramie Mountain Range. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ002-020-054-055-095-WYZ101-102-107-108-117>119-260030- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Dawes-Banner-Kimball-Cheyenne-North Sioux- Converse County Lower Elevations-Niobrara County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Chadron, Chadron St Park, Harrisburg, Kimball, Brownson, Sidney, Harrison, Bill, Douglas, Deer Creek, Glenrock, Lusk, Redbird, Wheatland, Guernsey, Torrington, Whitaker, Federal, Horse Creek, Cheyenne, and Pine Bluffs 926 AM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of 3 to 5 inches. Blowing snow. Winds gusting as high as 30 to 40 mph. * WHERE...Converse, Niobrara, North Sioux, and Dawes Counties. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could also significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ112-114-260030- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 926 AM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations of 2 to 5 inches. Blowing Snow. Low Wind Chills. Winds gusting as high as 40 mph. * WHERE...Sierra Madre, Snowy, and Northern Laramie Mountain Ranges. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
569 WWUS45 KCYS 252000 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 100 PM MST Tue Feb 25 2020 ...BLOWING SNOW WILL PERSIST THIS AFTERNOON ACROSS THE PINE RIDGE FROM CONVERSE COUNTY WYOMING EAST THROUGH THE NORTHERN NEBRASKA PANHANDLE... ...SNOW AND BLOWING SNOW WILL CONTINUE ACROSS THE NORTH LARAMIE, SNOWY, AND SIERRA MADRE MOUNTAIN RANGES THIS AFTERNOON... ...BANDS OF SNOW AND BLOWING SNOW WILL CONTINUE ALONG A SMALL AREA IN EXTREME SOUTHEAST WYOMING AND THE SOUTHERN NEBRASKA PANHANDLE THROUGH EARLY THIS EVENING... WYZ116-260300- /O.EXP.KCYS.BZ.W.0006.000000T0000Z-200225T2000Z/ /O.CON.KCYS.WW.Y.0017.000000T0000Z-200226T0300Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 100 PM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... ...BLIZZARD WARNING WILL EXPIRE AT 1 PM MST THIS AFTERNOON... * WHAT...Blowing snow will continue. * WHERE...I-80 summit between mile markers 320 and 330. * WHEN...The Winter Weather Advisor will continue through 8 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103-260300- /O.CON.KCYS.WS.W.0007.000000T0000Z-200226T0300Z/ North Laramie Range- Including the city of Garrett 100 PM MST Tue Feb 25 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of 1 to 2 inches. Winds gusting as high as 40 mph. * WHERE...North Laramie Mountain Range. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ002-020-054-055-095-WYZ101-102-107-108-117>119-260300- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Dawes-Banner-Kimball-Cheyenne-North Sioux- Converse County Lower Elevations-Niobrara County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- Including the cities of Chadron, Chadron St Park, Harrisburg, Kimball, Brownson, Sidney, Harrison, Bill, Douglas, Deer Creek, Glenrock, Lusk, Redbird, Wheatland, Guernsey, Torrington, Whitaker, Federal, Horse Creek, Cheyenne, and Pine Bluffs 100 PM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow. Additional snow accumulations less than one inch. Blowing snow. Winds gusting as high as 20 to 30 mph. * WHERE...Converse, Niobrara, North Sioux, and Dawes Counties. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could also significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ112-114-260300- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 100 PM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Snow and Blowing Snow. Additional snow accumulation less than 1 inch. Low Wind Chills. Winds gusting as high as 40 mph. * WHERE...Sierra Madre, Snowy, and Northern Laramie Mountain Ranges. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Mountain travel will become difficult due to icy, snow covered roads and low visibilities in falling and blowing snow. Outdoor recreation could be life threatening to those not prepared for severe winter conditions. Hikers and snowmobilers can easily become disoriented and lost. Frostbite and hypothermia can set in quickly. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
155 WWUS45 KCYS 252123 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 223 PM MST Tue Feb 25 2020 ...BLOWING SNOW WILL PERSIST THROUGH THE EARLY EVENING ACROSS THE PINE RIDGE FROM CONVERSE COUNTY WYOMING EAST THROUGH THE NORTHERN NEBRASKA PANHANDLE... ...BANDS OF SNOW AND BLOWING SNOW WILL CONTINUE ALONG A SMALL AREA IN EXTREME SOUTHEAST WYOMING AND THE SOUTHERN NEBRASKA PANHANDLE THROUGH EARLY THIS EVENING... WYZ103-252230- /O.CAN.KCYS.WS.W.0007.000000T0000Z-200226T0300Z/ North Laramie Range- Including the city of Garrett 223 PM MST Tue Feb 25 2020 ...WINTER STORM WARNING IS CANCELLED... Snow had ended across the area. As a result, the winter storm warning had been cancelled. $$ WYZ101-102-107-112-114-252230- /O.CAN.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Converse County Lower Elevations-Niobrara County- East Platte County-Sierra Madre Range-Snowy Range- Including the cities of Bill, Douglas, Deer Creek, Glenrock, Lusk, Redbird, Wheatland, Guernsey, Centennial, and Albany 223 PM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow and blowing snow had ended across the area. There could still see some patchy blowing snow early this evening. Otherwise, the winter weather advisory had been cancelled. $$ NEZ002-020-054-055-095-WYZ108-117>119-260300- /O.CON.KCYS.WW.Y.0016.000000T0000Z-200226T0300Z/ Dawes-Banner-Kimball-Cheyenne-North Sioux-Goshen County- South Laramie Range Foothills-Central Laramie County- East Laramie County- Including the cities of Chadron, Chadron St Park, Harrisburg, Kimball, Brownson, Sidney, Harrison, Torrington, Whitaker, Federal, Horse Creek, Cheyenne, and Pine Bluffs 223 PM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Additional snow accumulations less than one inch. Blowing snow. Winds gusting as high as 20 to 30 mph. * WHERE...Converse, Niobrara, North Sioux, and Dawes Counties. * WHEN...Until 8 PM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow will reduce visibility at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-260300- /O.CON.KCYS.WW.Y.0017.000000T0000Z-200226T0300Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 223 PM MST Tue Feb 25 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... * WHAT...Blowing snow will continue. * WHERE...I-80 summit between mile markers 320 and 330. * WHEN...The Winter Weather Advisor will continue through 8 PM MST this evening. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could reduce visibility at times. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this winter storm warning went out at Feb 24, 4:12 PM MST, 1 hour 46 minutes earlier.
Area forecast discussion, Feb 24, 4:12 PM MST, 1 hour 46 minutes before
Area Forecast Discussion
National Weather Service Cheyenne WY
412 PM MST Mon Feb 24 2020
.SHORT TERM...(This evening through Tuesday night)
Issued at 239 PM MST Mon Feb 24 2020
Wind speeds have decreased considerably across the area. As a
result, we have dropped the high wind warnings early. However, we
are still seeing blowing snow on the web cams. In addition, some
snow showers have continued to develop, but they are becoming
fewer and far between. As a result, we are keeping the winter
weather advisory for areas west of the Laramie Range through 5pm.
Latest water vapor loop was showing the upper level low slowly
getting organized across the northern plains. This should result
in a fairly quiet evening across the area, but we will need to
keep an eye on things evolve across the northeast portions of
Wyoming. The HREF in particular is leaning towards slightly higher
snowfall amounts along the Pine Ridge and the Cheyenne Ridge
starting after midnight and continuing through early tomorrow
afternoon. Meanwhile, the SREF has tended to back off a little
compared to previous runs. We are leaning more towards the HREF
solutions, since there will be some low level instability
present...good upslope flow and decent QG forcing moving through
southeast Wyoming and the Nebraska Panhandle ahead of the upper
level jet. Therefore, we have hoisted some winter weather
advisories for areas mainly along and north of the Cheyenne Ridge
where 2 to 4 inches of snow will possible starting tomorrow
morning. The snowfall should wane fairly quickly during the
evening as the synoptic forcing and low level instability wanes.
.LONG TERM...(Wednesday through Sunday)
Issued at 158 PM MST Sun Feb 23 2020
A chilly morning across the CWA Wednesday in the wake of the low
pressure system with mins in the single digits to lower teens.
Still on the cool side Weds and Thursday then warming to close
out the week. Mainly dry but another fast-moving shortwave should
bring some snow showers to mainly the mtns on Thursday but amounts
not a lot given the speed of the system. Breezy conditions with
the shortwave Thursday otherwise winds not looking too significant
through the period as well.
&&
.AVIATION...(For the 00Z TAFS through 00Z Tuesday evening)
Issued at 412 PM MST Mon Feb 24 2020
VFR should prevail over the se Wy terminals for much of the night
though some isolated snow showers may produce some brief MVFR
conditions. Sctd MVFR/IFR conditions this evening over the Neb
Panhandle mainly for low visibilities in snow showers there. More
widespread MVFR/IFR conditions for low cigs and vsbys in snow
expected Tuesday as a disturbance approaches the area. Otherwise
gusty nwly winds will continue especially over the plains.
&&
.FIRE WEATHER...
Issued at 257 PM MST Mon Feb 24 2020
Low fire weather concerns for the near future as cold
temperatures, snow and blowing snow move into the High Plains and
adjacent high terrain tomorrow. Warming trend will follow
beginning Wednesday with a ridge of high pressure moving in
Friday.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Winter Weather Advisory until 8 PM MST Tuesday for WYZ101>103-
112-114.
Winter Weather Advisory from 5 AM to 8 PM MST Tuesday for WYZ107-
108-116>119.
Winter Weather Advisory until 5 PM MST this afternoon for WYZ104-
109-110.
NE...Winter Weather Advisory until 8 PM MST Tuesday for NEZ002-095.
Winter Weather Advisory from 5 AM to 8 PM MST Tuesday for NEZ020-
054-055.
&&
SHORT TERM...REC
LONG TERM...RE/REC
AVIATION...REHazardous weather outlook, Feb 24, 5:04 AM MST, 12 hours 54 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 504 AM MST Mon Feb 24 2020 WYZ106-107-110-116>118-251215- Central Laramie Range and Southwest Platte County- East Platte County-North Snowy Range Foothills- South Laramie Range-South Laramie Range Foothills- Central Laramie County- 504 AM MST Mon Feb 24 2020 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT A High Wind Warning is in effect through 5 PM. West winds of 35 to 45 mph with gusts 60 to 70 mph are likely. See Warning text for further details. Snow showers will combine with winds today for blowing snow and reduced visibility at times. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY Tuesday will be quite windy and cold with scattered to numerous snow showers. Blowing snow and reduced visibilities will create hazardous travel conditions at times. .Spotter information statement... Spotter activation will not be needed. NEZ003-019>021-054-055-096-WYZ104-105-108-109-111-113-115-119- 251215- Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- South Sioux-Ferris/Seminoe/Shirley Mountains-Shirley Basin- Goshen County-Central Carbon County-Southwest Carbon County- Upper North Platte River Basin-Laramie Valley-East Laramie County- 504 AM MST Mon Feb 24 2020 This hazardous weather outlook is for portions of western Nebraska...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TUESDAY Today and Tuesday will be quite windy with gusts to 50 mph at times and cold with scattered to numerous snow showers. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH SUNDAY No hazardous weather conditions expected. .Spotter information statement... Spotter activation will not be needed. NEZ002-095-WYZ101>103-112-114-251215- Dawes-North Sioux-Converse County Lower Elevations- Niobrara County-North Laramie Range-Sierra Madre Range- Snowy Range- 504 AM MST Mon Feb 24 2020 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TUESDAY A Winter Weather Advisory has been issued as strong winds combine with scattered to numerous snow showers to produce blowing snow and areas of reduced visibilities. Travel will become difficult and outdoor recreation could be life threatening to those not prepared for severe winter conditions. Additionally, wind chill temperatures will drop to 20 below zero in the Sierra Madre and Snowy Mountains leading to frostbite and hypothermia. Please see text for further details. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH SUNDAY No hazardous weather conditions expected. .Spotter information statement... Please call in or chat us on social media with snow measurements as accumulation occurs.
In the hours before
Local storm report, Feb 24, 3:03 PM MST, 2 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
303 PM MST MON FEB 24 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM SNOW 2 S ELK MOUNTAIN 41.65N 106.41W
02/24/2020 M1.4 INCH CARBON WY COCORAHS
COCORAHS STATION WY-CR-4 ELK MOUNTAIN 2.1 S.
&&
WMLocal storm report, Feb 24, 3:51 PM MST, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
351 PM MST MON FEB 24 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0936 AM BLIZZARD 4 NW ARLINGTON 41.63N 106.26W
02/24/2020 CARBON WY DEPT OF HIGHWAYS
BLIZZARD CONDITIONS WERE MET FOR WYZ 110
EARLIER THIS MORNING WITH SEVERAL SITES
MEASURING BRIEF PERIOD CONDITIONS. AS BAND
OF SNOW CREATING THESE CONDITIONS MOVED,
CALCULATED THE TIMING WITH USING THE SENSORS
WY19 AT ELK MOUNTAIN AND WY25 STROUSS HILL
ALONG I-80 FOR RECORDING PURPOSES.
&&
WMLocal storm report, Feb 24, 5:53 PM MST, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
553 PM MST MON FEB 24 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1020 AM NON-TSTM WND GST 12 SSE HORSE CREEK 41.25N 105.09W
02/24/2020 M62 MPH LARAMIE WY TRAINED SPOTTER
&&The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 5:15 AM MST | High Wind Warning | CYS | Albany, Laramie | 4 hr |
| Feb 25, 9:26 AM MST | Blizzard Warning | CYS | Albany, Laramie | 4 hr |
| Feb 25, 9:26 AM MST | Winter Weather Advisory | CYS | Albany, Laramie | 11 hr |
| Feb 25, 3:11 PM MST | High Wind Watch | CYS | Albany, Laramie, Platte | 10 hr |
Nearby
Winter Storm Warnings in Wyoming, 2020Every winter storm warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.