Alert archive / Wyoming / Winter Storm Warnings in 2021

Winter Storm Warning 18, NWS Cheyenne, WY

December 8, 20217 counties in Wyoming; Box Butte County, Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this winter storm warning at Dec 8, 2021, 10:37 AM MST for 7 counties in Wyoming; Box Butte County, Dawes County, Sioux County, Nebraska. It took effect at Dec 8, 2021, 11:00 PM MST. It was in force for 40 hr. 60 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
Dec 8, 2021, 10:37 AM MST (17:37 UTC)
In effect from
Dec 8, 2021, 11:00 PM MST
Expired
Dec 10, 2021, 2:48 PM MST
In force
40 hr
Issued by
NWS Cheyenne, WY

Counties Box Butte County, NE, Dawes County, NE, Sioux County, NE, Albany County, WY, Carbon County, WY, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 121 km from the middle of the area, began a volume at 17:37 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

TimeReportWhereRemark
Dec 9, 5:27 PM MSTHEAVY SNOW 6Rawlins, WYESTIMATED ACCUMULATION FROM PUBLIC CALLER.
Dec 9, 6:10 PM MSTHEAVY SNOW 013 Ne Centennial, WYINTERSTATE 80 CLOSED DUE TO HEAVY SNOW AND POOR ROAD CONDITIONS BETWEEN RAWLINS AND LARAMIE.
Dec 9, 6:10 PM MSTHEAVY SNOW 0Elk Mountain, WYINTERSTATE 80 CLOSED DUE TO HEAVY SNOW AND POOR ROAD CONDITIONS BETWEEN RAWLINS AND LARAMIE.
Dec 9, 8:10 PM MSTSNOW 2.515 Nne Mitchell, NERECEIVED REPORT ON FACEBOOK ESTIMATING 2 TO 3 INCHES OF SNOW ON HIGHWAY 71 NORTH OF THE SCOTTS BLUFF COUNTY BORDER.
Dec 9, 8:50 PM MSTHEAVY SNOW 7Glendo, WYRECEIVED REPORT ON FACEBOOK WITH PHOTO OF MEASUREMENT.
Dec 9, 9:34 PM MSTSNOW 0Vedauwoo, WYINTERSTATE 80 CLOSED WESTBOUND BETWEEN LARAMIE AND INTERSTATE 25
Dec 9, 10:15 PM MSTSNOW 3.58 S Marsland, NERECEIVED REPORT ON FACEBOOK ESTIMATING 3 TO 4 INCHES OF SNOW ON HIGHWAY 71 WEST OF HEMINGFORD.
Dec 9, 10:15 PM MSTSNOW 3.5Chadron, NERECEIVED REPORT ON TWITTER WITH PHOTO OF MEASUREMENT.
Dec 10, 12:00 AM MSTSNOW 1015 W Wheatland, WYPUBLIC REPORT OF 10 INCHES OF SNOW BY MIDNIGHT (SOCIAL MEDIA REPORT).
Dec 10, 1:00 AM MSTHEAVY SNOW 7Lusk, WYRECEIVED REPORT ON FACEBOOK WITH PHOTO OF MEASUREMENT.
Dec 10, 5:00 AM MSTSNOW 0.91 Wnw Cheyenne, WYCO-OP OBSERVER STATION CYSW4 CHEYENNE WFO.
Dec 10, 5:30 AM MSTHEAVY SNOW 71 N Chadron, NERECEIVED REPORT ON TWITTER.
Dec 10, 5:49 AM MSTSNOW 0.63 S South Greeley High, WYCOCORAHS STATION WY-LM-222 CHEYENNE 6.0 S.
Dec 10, 6:00 AM MSTSNOW 0.98 Wnw North Cheyenne, WYCOCORAHS STATION WY-LM-121 CHEYENNE 11.1 NW.
Dec 10, 6:00 AM MSTSNOW 12 Ene Cheyenne, WYCOCORAHS STATION WY-LM-82 CHEYENNE 2.0 ENE.
Dec 10, 6:30 AM MSTSNOW 3Guernsey, WYPUBLIC REPORT OF 3 INCHES OF SNOW (VIA SOCIAL MEDIA).
Dec 10, 6:45 AM MSTSNOW 4Lingle, WYPUBLIC REPORT OF 4 INCHES OF SNOWFALL (VIA SOCIAL MEDIA).
Dec 10, 6:45 AM MSTHEAVY SNOW 12Saratoga, WYPUBLIC REPORT OF 12 INCHES OF SNOWFALL (VIA SOCIAL MEDIA).
Dec 10, 7:00 AM MSTSNOW 0.51 W Cheyenne, WYCOCORAHS STATION WY-LM-190 CHEYENNE 1.4 W.
Dec 10, 7:00 AM MSTSNOW 0.74 Ese North Cheyenne, WYCOCORAHS STATION WY-LM-181 CHEYENNE 5.4 NE.
Dec 10, 7:00 AM MSTSNOW 15 Ese North Cheyenne, WYCOCORAHS STATION WY-LM-125 CHEYENNE 5.5 NE.
Dec 10, 7:00 AM MSTSNOW 1.16 Nnw North Cheyenne, WYCOCORAHS STATION WY-LM-112 CHEYENNE 10.7 N.
Dec 10, 7:00 AM MSTSNOW 1.16 Nnw North Cheyenne, WYSNOWFALL OF 1.1 INCHES/0.11 INCH MELTED LIQUID WATER EQUIVALENT.
Dec 10, 7:00 AM MSTSNOW 1.26 N La Grange, WYCOCORAHS STATION WY-GS-38 LA GRANGE 5.9 N.
Dec 10, 7:00 AM MSTSNOW 2.31 N Laramie, WYCOCORAHS STATION WY-AB-178 LARAMIE 0.6 N.
Dec 10, 7:00 AM MSTSNOW 2.31 Sse Laramie, WYCO-OP OBSERVER STATION ADFW4 LARAMIE 1 SE.
Dec 10, 7:00 AM MSTSNOW 2.32 Ene Laramie, WYCOCORAHS STATION WY-AB-180 LARAMIE 1.6 ENE.
Dec 10, 7:00 AM MSTSNOW 2.61 N Laramie, WYCOCORAHS STATION WY-AB-177 LARAMIE 0.8 N.
Dec 10, 7:00 AM MSTSNOW 32 Ene Laramie, WYCOCORAHS STATION WY-AB-138 LARAMIE 1.8 ENE.
Dec 10, 7:00 AM MSTSNOW 3.72 Ese Laramie, WYCOCORAHS STATION WY-AB-171 LARAMIE 2.5 ESE.
Dec 10, 7:00 AM MSTSNOW 3.92 N Laramie, WYCOCORAHS STATION WY-AB-45 LARAMIE 1.7 N.
Dec 10, 7:00 AM MSTSNOW 42 Se Chadron State Park, NECOCORAHS STATION NE-DS-1 CHADRON 11.6 S.
Dec 10, 7:00 AM MSTSNOW 4.83 Nnw Veteran, WYCOCORAHS STATION WY-GS-8 VETERAN 3.0 W.
Dec 10, 7:00 AM MSTSNOW 6.54 Wsw Douglas, WYCOCORAHS STATION WY-CV-16 DOUGLAS 4.3 WSW.
Dec 10, 7:00 AM MSTSNOW 7.510 E Jay Em, WYCO-OP OBSERVER STATION DDEW4 12.6 S VAN TASSELL.
Dec 10, 7:00 AM MSTHEAVY SNOW 7.510 E Jay Em, WYCORRECTS PREVIOUS SNOW REPORT FROM 10 E JAY EM. CO-OP OBSERVER STATION DDEW4 12.6 S VAN TASSELL.
Dec 10, 7:00 AM MSTHEAVY SNOW 8Wheatland, WYPUBLIC REPORT OF 8 INCHES OF SNOWFALL (VIA SOCIAL MEDIA).
Dec 10, 7:00 AM MSTHEAVY SNOW 9Lusk, WYRECEIVED CALL REPORTING OF 8 TO 10 INCHES OF SNOW ACCUMULATION. HEAVIEST SNOWFALL AROUND 5 TO 6 AM THIS MORNING.
Dec 10, 7:00 AM MSTSNOW 9.51 Nw Centennial, WYCOCORAHS STATION WY-AB-108 CENTENNIAL 1.1 NNE.
Dec 10, 7:00 AM MSTSNOW 13.3Elk Mountain, WYCOCORAHS STATION WY-CR-18 ELK MOUNTAIN 0.3 SW.
Dec 10, 7:00 AM MSTSNOW 16.16 Ne Riverside, WYCOCORAHS STATION WY-CR-32 RIVERSIDE 6.1 NE.
Dec 10, 7:30 AM MSTSNOW 0.52 E Cheyenne, WY
Dec 10, 7:30 AM MSTSNOW 12 S Cheyenne, WY
Dec 10, 7:30 AM MSTSNOW 1.75 Ene Cheyenne, WYWATER EQUIVALENT .12.
Dec 10, 7:30 AM MSTHEAVY SNOW 6Woods Landing, WY
Dec 10, 7:30 AM MSTSNOW 123 N Saratoga, WYCO-OP OBSERVER STATION SFHW4 3.4 N SARATOGA.
Dec 10, 7:44 AM MSTSNOW 0.53 Ssw North Cheyenne, WYCOCORAHS STATION WY-LM-131 CHEYENNE 3.0 NNW.
Dec 10, 7:50 AM MSTHEAVY SNOW 81 Se Wheatland, WYPUBLIC REPORT OF 8 INCHES OF SNOWFALL (VIA SOCIAL MEDIA).
Dec 10, 8:00 AM MSTSNOW 12 Nne Cheyenne, WYCOCORAHS STATION WY-LM-111 CHEYENNE 2.2 NNE.
Dec 10, 8:00 AM MSTSNOW 13 Ne Cheyenne, WYCOCORAHS STATION WY-LM-193 CHEYENNE 2.6 NE.
Dec 10, 8:00 AM MSTSNOW 1.15 E Alliance, NECOCORAHS STATION NE-BX-5 ALLIANCE 5.4 E.
Dec 10, 8:00 AM MSTSNOW 1.510 Sse Torrington, WYCOCORAHS STATION WY-GS-20 TORRINGTON 9.6 SSE.
Dec 10, 8:00 AM MSTSNOW 2.53 Se Laramie, WYCO-OP OBSERVER STATION LRMW4 3.2 SE LARAMIE.
Dec 10, 8:00 AM MSTSNOW 3.58 E Yoder, WYPUBLIC REPORT OF 3.5 INCHES OF SNOWFALL (VIA SOCIAL MEDIA).
Dec 10, 8:00 AM MSTSNOW 54 Sw Fort Laramie, WYCOCORAHS STATION WY-GS-27 FORT LARAMIE 3.5 SW.
Dec 10, 8:00 AM MSTSNOW 5Fort Laramie, WYCOCORAHS STATION WY-GS-25 FORT LARAMIE 0.2 NW.
Dec 10, 8:00 AM MSTSNOW 5.43 Nne Hawk Springs, WYCOCORAHS STATION WY-GS-11 YODER 6.5 SSE.
Dec 10, 8:00 AM MSTSNOW 6.5Guernsey, WYCOCORAHS STATION WY-PT-25 GUERNSEY 0.3 WSW.
Dec 10, 8:00 AM MSTSNOW 72 S Douglas, WYPUBLIC REPORT OF 7 INCHES OF SNOW (VIA SOCIAL MEDIA).
Dec 10, 8:00 AM MSTHEAVY SNOW 7Agate, NEPUBLIC REPORT OF APPROXIMATELY 6-8 INCHES OF SNOWFALL (VIA SOCIAL MEDIA).

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 5.6 hours before the alert went out and 250 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.

Skew-T log-pSkew-T log-p diagram, Rapid City, SD at 12:00Z on 2021-12-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Rapid City, SD at 12:00Z on 2021-12-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1569 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

863 
WWUS45 KCYS 081737
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1037 AM MST Wed Dec 8 2021

WYZ112-114-091200-
/O.UPG.KCYS.WS.A.0012.211209T0600Z-211211T0000Z/
/O.NEW.KCYS.WS.W.0018.211209T0600Z-211211T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
1037 AM MST Wed Dec 8 2021

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM
MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2
  feet. Winds gusting as high as 50 mph.

* WHERE...Sierra Madre and Snowy Range.

* WHEN...From 11 PM this evening to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.


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.

&&

$$

NEZ002-003-019>021-095-096-091200-
/O.CON.KCYS.WS.A.0012.211210T0000Z-211211T0000Z/
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Northern Sioux County-Southern Sioux County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, 
Bayard, Redington, Harrison, and Agate
1037 AM MST Wed Dec 8 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY AFTERNOON
THROUGH FRIDAY AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations of 5 to 8 
  inches possible.

* WHERE...Western Nebraska Panhandle.

* WHEN...From late Thursday afternoon through Friday afternoon.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

WYZ103>105-109>111-091200-
/O.CON.KCYS.WS.A.0012.211209T1200Z-211210T1800Z/
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Carbon County-North Snowy Range Foothills-
Southwest Carbon County-
Including the cities of Garrett, Esterbrook, Seminoe Dam, 
Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, 
and Baggs
1037 AM MST Wed Dec 8 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
FRIDAY MORNING...

* WHAT...Heavy snow possible. Total snow accumulations of 6 to 
  12 inches possible.

* WHERE...North Laramie Range, North Snowy Range Foothills, 
  Ferris/Seminoe/Shirley Mountains.

* WHEN...From late Wednesday night through Friday morning.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$

WYZ101-102-106>108-116-117-091200-
/O.CON.KCYS.WS.A.0012.211209T1800Z-211211T0000Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-South Laramie Range-
South Laramie Range Foothills-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington, Buford,
Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek
1037 AM MST Wed Dec 8 2021

...WINTER STORM WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH FRIDAY AFTERNOON...

* WHAT...Heavy snow possible. Total snow accumulations of 5 to 
  10 inches possible.

* WHERE...I-80 summit and lower elevations of southeast Wyoming.

* WHEN...From Thursday morning through Friday afternoon.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation. 

&&

$$
6 follow-up statements
005 
WWUS45 KCYS 082115
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
215 PM MST Wed Dec 8 2021

NEZ002-003-095-096-091200-
/O.UPG.KCYS.WS.A.0012.211210T0000Z-211211T0000Z/
/O.EXB.KCYS.WS.W.0018.211210T0000Z-211211T0000Z/
Dawes County-Box Butte County-Northern Sioux County-
Southern Sioux County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Harrison, and Agate
215 PM MST Wed Dec 8 2021

...WINTER STORM WARNING IN EFFECT FROM 5 PM THURSDAY TO 5 PM MST
FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 9 
  inches.

* WHERE...Dawes, Box Butte, and Sioux Counties.

* WHEN...From 5 PM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ104-105-109-110-091200-
/O.UPG.KCYS.WS.A.0012.211209T1200Z-211210T1800Z/
/O.EXB.KCYS.WS.W.0018.211209T1200Z-211210T1800Z/
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Carbon County-North Snowy Range Foothills-
Including the cities of Seminoe Dam, Medicine Bow, Shirley Basin,
Rawlins, Arlington, and Elk Mountain
215 PM MST Wed Dec 8 2021

...WINTER STORM WARNING IN EFFECT FROM 5 AM THURSDAY TO 11 AM MST
FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 11
  inches. Winds gusting as high as 35 mph.

* WHERE...Carbon County, including the cities of Rawlins,
  Arlington, and Elk Mountain, Shirley Mountains, and Shirley
  Basin.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Blowing
  snow could significantly reduce visibility.

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.

&&

$$

WYZ101-102-106>108-116-091200-
/O.UPG.KCYS.WS.A.0012.211209T1800Z-211211T0000Z/
/O.EXB.KCYS.WS.W.0018.211209T1800Z-211211T0000Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-South Laramie Range-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington, Buford,
Pumpkin Vine, and Vedauwoo
215 PM MST Wed Dec 8 2021

...WINTER STORM WARNING IN EFFECT FROM 11 AM THURSDAY TO 5 PM MST
FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 10 
  inches. Winds gusting as high as 35 mph.

* WHERE...Converse County Lower Elevations, Niobrara County,
  Central Laramie Range, Platte County, and Goshen County,
  including the cities of Douglas, Glenrock, Bill, Deer Creek,
  Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington,
  Buford, Pumpkin Vine, and Vedauwoo.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.


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.

&&

$$

WYZ112-114-091200-
/O.CON.KCYS.WS.W.0018.211209T0600Z-211211T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
215 PM MST Wed Dec 8 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING
TO 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 
  feet. Winds gusting as high as 50 mph.

* WHERE...Sierra Madre and Snowy Range.

* WHEN...From 11 PM this evening to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could bring down tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ103-111-091200-
/O.UPG.KCYS.WS.A.0012.211209T1200Z-211210T1800Z/
/O.NEW.KCYS.WW.Y.0040.211209T1200Z-211210T1800Z/
North Laramie Range-Southwest Carbon County-
Including the cities of Garrett, Esterbrook, and Baggs
215 PM MST Wed Dec 8 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM THURSDAY TO 11 AM
MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches. Winds gusting as high as 40 mph.

* WHERE...North Laramie Range and Southwest Carbon County,
  including the cities of Garrett Esterbrook, and Baggs.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or 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.

&&

$$

NEZ019>021-091200-
/O.UPG.KCYS.WS.A.0012.211210T0000Z-211211T0000Z/
/O.NEW.KCYS.WW.Y.0040.211210T0000Z-211211T0000Z/
Scotts Bluff County-Banner County-Morrill County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, and Redington
215 PM MST Wed Dec 8 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THURSDAY TO 5 PM
MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches. Winds gusting as high as 35 mph.

* WHERE...Scotts Bluff County, Banner County, and Morrill County,
  including the cities of Scottsbluff, Gering, Harrisburg, Angora,
  Bridgeport, Bayard, and Redington.

* WHEN...From 5 PM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or 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.

&&

$$

WYZ117-091200-
/O.UPG.KCYS.WS.A.0012.211209T1800Z-211211T0000Z/
/O.NEW.KCYS.WW.Y.0040.211209T1800Z-211211T0000Z/
South Laramie Range Foothills-
Including the cities of Whitaker, Federal, and Horse Creek
215 PM MST Wed Dec 8 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 5 PM
MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches. Winds gusting as high as 40 mph.

* WHERE...South Laramie Range Foothills.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or 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.

&&

$$

WYZ113-091200-
/O.NEW.KCYS.WW.Y.0040.211209T1200Z-211210T1800Z/
Upper North Platte River Basin-
Including the cities of Saratoga and Encampment
215 PM MST Wed Dec 8 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM THURSDAY TO 11 AM
MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 5 to 9 
  inches.

* WHERE...Saratoga and Encampment.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult due to blowing snow.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ115-118-119-091200-
/O.NEW.KCYS.WW.Y.0040.211209T1800Z-211211T0000Z/
Laramie Valley-Central Laramie County-East Laramie County-
Including the cities of Laramie, Bosler, Cheyenne, 
and Pine Bluffs
215 PM MST Wed Dec 8 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 5 PM
MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 6 
  inches. Winds gusting as high as 40 mph.

* WHERE...Laramie Valley and Laramie County, including the cities
  of Laramie, Bosler, Cheyenne, and Pine Bluffs.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or 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.

&&

$$

LK
881 
WWUS45 KCYS 091025
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
325 AM MST Thu Dec 9 2021

WYZ112-114-100000-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
325 AM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 
  feet. Winds gusting as high as 50 mph.

* WHERE...Sierra Madre and Snowy Range.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Patchy
  blowing snow could significantly reduce visibility. Hikers,
  hunters, and snowmobilers will face an increased threat of 
  becoming lost or disoriented. Gusty winds could bring down tree 
  branches.

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.

&&

$$

NEZ002-003-095-096-100000-
/O.CON.KCYS.WS.W.0018.211210T0000Z-211211T0000Z/
Dawes County-Box Butte County-Northern Sioux County-
Southern Sioux County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Harrison, and Agate
325 AM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 
  inches.

* WHERE...Dawes, Box Butte, and Sioux Counties including the towns 
  of Chadron and Harrison.

* WHEN...From 5 PM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ104-105-109-110-100000-
/O.CON.KCYS.WS.W.0018.211209T1200Z-211210T1800Z/
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Carbon County-North Snowy Range Foothills-
Including the cities of Seminoe Dam, Medicine Bow, Shirley Basin,
Rawlins, Arlington, and Elk Mountain
325 AM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  11 inches. Winds gusting as high as 35 mph.

* WHERE...Carbon County, including the towns of Rawlins, 
  Arlington, and Elk Mountain, Shirley Mountains, and Shirley 
  Basin.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ101-102-106>108-116-100000-
/O.CON.KCYS.WS.W.0018.211209T1800Z-211211T0000Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-South Laramie Range-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington, Buford,
Pumpkin Vine, and Vedauwoo
325 AM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches. Winds gusting as high as 35 mph.

* WHERE...Converse County Lower Elevations, Niobrara County,
  Central Laramie Range, Platte County, and Goshen County,
  including the towns of Douglas, Glenrock, Bill, Lusk, Bordeaux,
  Wheatland, Guernsey, Torrington, Buford, and Vedauwoo.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ111-113-100000-
/O.CON.KCYS.WW.Y.0040.211209T1200Z-211210T1800Z/
Southwest Carbon County-Upper North Platte River Basin-
Including the cities of Baggs, Saratoga, and Encampment
325 AM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...Southwest Carbon County and the Upper North Platte River
  Basin including the towns of Baggs, Saratoga, and Encampment.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be difficult due to falling and blowing 
  snow.

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.

&&

$$

NEZ019>021-100000-
/O.CON.KCYS.WW.Y.0040.211210T0000Z-211211T0000Z/
Scotts Bluff County-Banner County-Morrill County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, and Redington
325 AM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches. Winds gusting as high as 35 mph.

* WHERE...Scotts Bluff, Banner, and Morrill Counties, including
  the cities of Scottsbluff, Gering, Harrisburg, Bridgeport, 
  Bayard, and Redington.

* WHEN...From 5 PM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could 
  significantly reduce visibility. The hazardous conditions could 
  impact the morning or 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.

&&

$$

WYZ115-117>119-100000-
/O.CON.KCYS.WW.Y.0040.211209T1800Z-211211T0000Z/
Laramie Valley-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
Including the cities of Laramie, Bosler, Whitaker, Federal, 
Horse Creek, Cheyenne, and Pine Bluffs
325 AM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 5 PM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 5 
  inches. Winds gusting as high as 40 mph.

* WHERE...Laramie Valley and Laramie County including the cities
  of Laramie, Cheyenne, Horse Creek, and Pine Bluffs.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could 
  significantly reduce visibility. The hazardous conditions could 
  impact the morning or 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.

&&

$$

WYZ103-100000-
/O.CON.KCYS.WW.Y.0040.211209T1200Z-211210T1800Z/
North Laramie Range-
Including the cities of Garrett and Esterbrook
325 AM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches. Winds gusting as high as 40 mph.

* WHERE...North Laramie Range including the towns of Garrett and 
  Esterbrook.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult. Blowing snow could 
  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.

&&

$$

Brothers
272 
WWUS45 KCYS 092056
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
156 PM MST Thu Dec 9 2021

NEZ002-003-095-096-101200-
/O.CON.KCYS.WS.W.0018.211210T0000Z-211211T0000Z/
Dawes County-Box Butte County-Northern Sioux County-
Southern Sioux County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Harrison, and Agate
156 PM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  10 inches.

* WHERE...Dawes, Box Butte, and Sioux Counties including the 
  towns of Chadron and Harrison.

* WHEN...From 5 PM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ112-114-101200-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
156 PM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 
  feet. Winds gusting as high as 50 mph.

* WHERE...Sierra Madre and Snowy Range.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. Hikers, 
  hunters, and snowmobilers will face an increased threat of 
  becoming lost or disoriented. Gusty winds could bring down 
  tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ104-105-109-110-101200-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211210T1800Z/
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Carbon County-North Snowy Range Foothills-
Including the cities of Seminoe Dam, Medicine Bow, Shirley Basin,
Rawlins, Arlington, and Elk Mountain
156 PM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 
  11 inches. Winds gusting as high as 35 mph.

* WHERE...Carbon County, including the towns of Rawlins, 
  Arlington, and Elk Mountain, Shirley Mountains, and Shirley 
  Basin.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ101-102-106>108-116-101200-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-South Laramie Range-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington, Buford,
Pumpkin Vine, and Vedauwoo
156 PM MST Thu Dec 9 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 
  10 inches. Winds gusting as high as 35 mph.

* WHERE...Converse County Lower Elevations, Niobrara County, 
  Central Laramie Range, Platte County, and Goshen County, 
  including the towns of Douglas, Glenrock, Bill, Lusk, 
  Bordeaux, Wheatland, Guernsey, Torrington, Buford, and 
  Vedauwoo.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

NEZ019>021-101200-
/O.CON.KCYS.WW.Y.0040.211210T0000Z-211211T0000Z/
Scotts Bluff County-Banner County-Morrill County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, and Redington
156 PM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 5 PM MST FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 6 
  inches. Winds gusting as high as 35 mph.

* WHERE...Scotts Bluff, Banner, and Morrill Counties, including 
  the cities of Scottsbluff, Gering, Harrisburg, Bridgeport, 
  Bayard, and Redington.

* WHEN...From 5 PM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could 
  significantly reduce visibility. The hazardous conditions 
  could impact the morning or 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.

&&

$$

WYZ111-113-101200-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211210T1800Z/
Southwest Carbon County-Upper North Platte River Basin-
Including the cities of Baggs, Saratoga, and Encampment
156 PM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 4 to 7 
  inches.

* WHERE...Southwest Carbon County and the Upper North Platte 
  River Basin including the towns of Baggs, Saratoga, and 
  Encampment.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be difficult due to falling and blowing 
  snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ115-117>119-101200-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
Laramie Valley-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
Including the cities of Laramie, Bosler, Whitaker, Federal, 
Horse Creek, Cheyenne, and Pine Bluffs
156 PM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 1 to 5 
  inches. Winds gusting as high as 40 mph.

* WHERE...Laramie Valley and Laramie County including the cities 
  of Laramie, Cheyenne, Horse Creek, and Pine Bluffs.

* WHEN...From 11 AM Thursday to 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could 
  significantly reduce visibility. The hazardous conditions 
  could impact the morning or 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.

&&

$$

WYZ103-101200-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211210T1800Z/
North Laramie Range-
Including the cities of Garrett and Esterbrook
156 PM MST Thu Dec 9 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST
FRIDAY...

* WHAT...Snow expected. Total snow accumulations of 6 to 12 
  inches. Winds gusting as high as 40 mph.

* WHERE...North Laramie Range including the towns of Garrett and 
  Esterbrook.

* WHEN...From 5 AM Thursday to 11 AM MST Friday.

* IMPACTS...Travel could be very difficult. Blowing snow could 
  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.

&&

$$

LK
708 
WWUS45 KCYS 101001
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
301 AM MST Fri Dec 10 2021

NEZ002-003-095-096-101900-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Dawes County-Box Butte County-Northern Sioux County-
Southern Sioux County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Harrison, and Agate
301 AM MST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Heavy snow expected. Additional accumulation 2 to 4
  inches today. Storm total snow accumulations of 6 to 10 inches.

* WHERE...Dawes, Box Butte, and Sioux Counties including the 
  towns of Chadron and Harrison.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Falling
  and blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ112-114-101900-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
301 AM MST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Heavy snow and blowing snow expected. Additional 
  accumulation 2 to 5 inches today. Storm total snow accumulations
  of 1 to 2 feet. Winds gusting as high as 50 mph.

* WHERE...Sierra Madre and Snowy Range.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. Hikers, 
  hunters, and snowmobilers will face an increased threat of 
  becoming lost or disoriented. Gusty winds could bring down 
  tree branches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ104-105-109-110-101800-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211210T1800Z/
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Carbon County-North Snowy Range Foothills-
Including the cities of Seminoe Dam, Medicine Bow, Shirley Basin,
Rawlins, Arlington, and Elk Mountain
301 AM MST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS
MORNING...

* WHAT...Snow and blowing snow expected. Additional accumulation 
  1 to 3 inches today. Storm total snow accumulations of 6 to 11 
  inches. Winds gusting as high as 40 mph.

* WHERE...Carbon County, including the towns of Rawlins, 
  Arlington, and Elk Mountain, Shirley Mountains, and Shirley 
  Basin.

* WHEN...Until 11 AM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ101-102-106>108-116-101900-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-South Laramie Range-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington, Buford,
Pumpkin Vine, and Vedauwoo
301 AM MST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow and blowing snow expected. Additional accumulation 
  1 to 3 inches today. Storm total snow accumulations of 5 to 10 
  inches. Winds gusting as high as 35 mph.

* WHERE...Converse County Lower Elevations, Niobrara County, 
  Central Laramie Range, Platte County, and Goshen County, 
  including the towns of Douglas, Glenrock, Bill, Lusk, 
  Bordeaux, Wheatland, Guernsey, Torrington, Buford, and 
  Vedauwoo.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

NEZ019>021-101900-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
Scotts Bluff County-Banner County-Morrill County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, and Redington
301 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow expected. Additional accumulation up to 1 inch 
  today. Storm total snow accumulations of 2 to 5 inches. Winds 
  gusting as high as 35 mph.

* WHERE...Scotts Bluff, Banner, and Morrill Counties, including 
  the cities of Scottsbluff, Gering, Harrisburg, Bridgeport, 
  Bayard, and Redington.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could
  significantly reduce visibility. The hazardous conditions could
  impact the morning 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.

&&

$$

WYZ111-113-101800-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211210T1800Z/
Southwest Carbon County-Upper North Platte River Basin-
Including the cities of Baggs, Saratoga, and Encampment
301 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS
MORNING...

* WHAT...Snow and blowing snow expected. Additional accumulation 
  up to 1 inch today. Storm total snow accumulations of 4 to 7 
  inches.

* WHERE...Southwest Carbon County and the Upper North Platte 
  River Basin including the towns of Baggs, Saratoga, and 
  Encampment.

* WHEN...Until 11 AM MST Friday.

* IMPACTS...Travel could be difficult due to falling and blowing 
  snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ115-117>119-101900-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
Laramie Valley-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
Including the cities of Laramie, Bosler, Whitaker, Federal, 
Horse Creek, Cheyenne, and Pine Bluffs
301 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow and blowing snow expected. Additional accumulation
  up to 1 inch today. Storm total snow accumulations of 1 to 4 
  inches. Winds gusting as high as 40 mph.

* WHERE...Laramie Valley and Laramie County including the cities 
  of Laramie, Cheyenne, Horse Creek, and Pine Bluffs.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could
  significantly reduce visibility. The hazardous conditions could
  impact the morning 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.

&&

$$

WYZ103-101800-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211210T1800Z/
North Laramie Range-
Including the cities of Garrett and Esterbrook
301 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS
MORNING...

* WHAT...Snow and blowing snow expected. Additional accumulation 
  1 to 3 inches today. Storm total snow accumulations of 6 to 12 
  inches. Winds gusting as high as 40 mph.

* WHERE...North Laramie Range including the towns of Garrett and 
  Esterbrook.

* WHEN...Until 11 AM MST Friday.

* IMPACTS...Travel could be very difficult. Blowing snow could 
  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.

&&

$$

Brothers
688 
WWUS45 KCYS 101803
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1103 AM MST Fri Dec 10 2021

WYZ112-114-101915-
/O.CAN.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
1103 AM MST Fri Dec 10 2021

...WINTER STORM WARNING IS CANCELLED...

Periods of light snow and blowing snow is still possible during
the remainder of the afternoon. Otherwise, little if any
additional snow accumulation is expected. 

$$

WYZ104-105-109-110-101915-
/O.EXP.KCYS.WS.W.0018.000000T0000Z-211210T1800Z/
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Carbon County-North Snowy Range Foothills-
Including the cities of Seminoe Dam, Medicine Bow, Shirley Basin,
Rawlins, Arlington, and Elk Mountain
1103 AM MST Fri Dec 10 2021

...WINTER STORM WARNING WILL EXPIRE AT 11 AM MST THIS MORNING...

Periods of light snow and blowing snow is still possible during
the remainder of the afternoon. Otherwise, little if any
additional snow accumulation is expected. 

$$

WYZ115-101915-
/O.CAN.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
Laramie Valley-
Including the cities of Laramie and Bosler
1103 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

Periods of light snow and blowing snow is still possible during
the remainder of the afternoon. Otherwise, little if any
additional snow accumulation is expected. 

$$

WYZ111-113-101915-
/O.EXP.KCYS.WW.Y.0040.000000T0000Z-211210T1800Z/
Southwest Carbon County-Upper North Platte River Basin-
Including the cities of Baggs, Saratoga, and Encampment
1103 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...


Periods of light snow and blowing snow is still possible during
the remainder of the afternoon. Otherwise, little if any
additional snow accumulation is expected. 

$$

WYZ103-101915-
/O.EXP.KCYS.WW.Y.0040.000000T0000Z-211210T1800Z/
North Laramie Range-
Including the cities of Garrett and Esterbrook
1103 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 AM MST THIS
MORNING...

Periods of light snow and blowing snow is still possible during
the remainder of the afternoon. Otherwise, little if any
additional snow accumulation is expected. 

$$

NEZ002-003-095-096-110000-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Dawes County-Box Butte County-Northern Sioux County-
Southern Sioux County-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Harrison, and Agate
1103 AM MST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Periods of light to moderate snow this afternoon.
  Additional accumulation 1 to 2 inches. Storm total snow 
  accumulations of 6 to 10 inches.

* WHERE...Dawes, Box Butte, and Sioux Counties including the 
  towns of Chadron and Harrison.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Falling and blowing snow could significantly reduce visibility.

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.

&&

$$

WYZ101-102-106>108-116-110000-
/O.CON.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Converse County Lower Elevations-Niobrara County-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-South Laramie Range-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Lusk, Redbird, Bordeaux, Wheatland, Guernsey, Torrington, Buford,
Pumpkin Vine, and Vedauwoo
1103 AM MST Fri Dec 10 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Snow and blowing snow expected. Additional accumulation 1
  to 2 inches today. Storm total snow accumulations of 5 to 10 
  inches. Winds gusting as high as 35 mph.

* WHERE...Converse County Lower Elevations, Niobrara County, 
  Central Laramie Range, Platte County, and Goshen County, 
  including the towns of Douglas, Glenrock, Bill, Lusk, 
  Bordeaux, Wheatland, Guernsey, Torrington, Buford, and 
  Vedauwoo.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be very difficult to impossible. 
  Blowing snow could significantly reduce visibility.

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.

&&

$$

NEZ019>021-110000-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
Scotts Bluff County-Banner County-Morrill County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, and Redington
1103 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Periods of snow expected. Additional accumulation up to 
  1 inch today. Storm total snow accumulations of 2 to 5 inches. 
  Winds gusting as high as 35 mph.

* WHERE...Scotts Bluff, Banner, and Morrill Counties, including 
  the cities of Scottsbluff, Gering, Harrisburg, Bridgeport, 
  Bayard, and Redington.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could 
  significantly reduce visibility. The hazardous conditions 
  could impact the morning 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.

&&

$$

WYZ117>119-110000-
/O.CON.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
South Laramie Range Foothills-Central Laramie County-
East Laramie County-
Including the cities of Whitaker, Federal, Horse Creek, Cheyenne,
and Pine Bluffs
1103 AM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON...

* WHAT...Periods of snow and blowing snow expected. Additional 
  accumulation up to 1 inch today. Storm total snow accumulations 
  of 1 to 4 inches. Winds gusting as high as 40 mph.

* WHERE...Laramie Valley and Laramie County including the cities 
  of Laramie, Cheyenne, Horse Creek, and Pine Bluffs.

* WHEN...Until 5 PM MST Friday.

* IMPACTS...Travel could be difficult. Patchy blowing snow could 
  significantly reduce visibility. The hazardous conditions 
  could impact the morning 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.

&&

$$
194 
WWUS45 KCYS 102148
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
248 PM MST Fri Dec 10 2021

WYZ106-111200-
/O.CAN.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
/O.NEW.KCYS.BZ.W.0004.211211T0600Z-211211T1800Z/
Central Laramie Range and Southwest Platte County-
Including the city of Bordeaux
248 PM MST Fri Dec 10 2021

...BLIZZARD WARNING IN EFFECT FROM 11 PM THIS EVENING TO 11 AM
MST SATURDAY...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Blizzard conditions expected. Winds gusting as high as 
  75 mph.

* WHERE...Between Wheatland and Chugwater including Bordeaux.

* WHEN...From 11 PM this evening to 11 AM MST Saturday.

* IMPACTS...Widespread blowing snow could significantly reduce
  visibility and create whiteout conditions. The hazardous
  conditions could have large impacts on the morning commute. The
  cold wind chills as low as 15 below zero could cause frostbite 
  on exposed skin in as little as 30 minutes.


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. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

NEZ002-003-095-096-WYZ101-102-107-108-116-102300-
/O.CAN.KCYS.WS.W.0018.000000T0000Z-211211T0000Z/
Dawes County-Box Butte County-Northern Sioux County-
Southern Sioux County-Converse County Lower Elevations-
Niobrara County-East Platte County-Goshen County-
South Laramie Range-
Including the cities of Chadron, Chadron St Park, Alliance, 
Hemingford, Harrison, Agate, Douglas, Glenrock, Bill, Deer Creek,
Lusk, Redbird, Wheatland, Guernsey, Torrington, Buford, 
Pumpkin Vine, and Vedauwoo
248 PM MST Fri Dec 10 2021

...WINTER STORM WARNING IS CANCELLED...

Periods of snow showers can be expected through early this
evening. However, little if any additional snowfall accumulation
is expected. Gusty winds will continue to cause drifting snow 
tonight. 

$$

NEZ019>021-WYZ117>119-102300-
/O.CAN.KCYS.WW.Y.0040.000000T0000Z-211211T0000Z/
Scotts Bluff County-Banner County-Morrill County-
South Laramie Range Foothills-Central Laramie County-
East Laramie County-
Including the cities of Scottsbluff, Gering, Harrisburg, Angora, 
Bridgeport, Bayard, Redington, Whitaker, Federal, Horse Creek, 
Cheyenne, and Pine Bluffs
248 PM MST Fri Dec 10 2021

...WINTER WEATHER ADVISORY IS CANCELLED...

A few snow showers are still possible through sunset. However,
little if any additional snowfall accumulation is expected. Gusty
winds will cause some blowing and drifting of snow during the
remainder of the afternoon into the evening.  

$$

WYZ110-111200-
/O.NEW.KCYS.BZ.W.0004.211211T0300Z-211212T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
248 PM MST Fri Dec 10 2021

...BLIZZARD WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 PM MST
SATURDAY...

* WHAT...Blizzard conditions expected. Winds gusting as high as 
  65 mph.

* WHERE...Between Arlington and Elk Mountain

* WHEN...From 8 PM this evening to 5 PM MST Saturday.

* IMPACTS...Widespread blowing snow will cause significant
  reduction in visibility and whiteout conditions. The cold wind 
  chills as low as 20 below zero could cause frostbite on exposed 
  skin in as little as 30 minutes.

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. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

WYZ109-111200-
/O.NEW.KCYS.BZ.W.0004.211211T0600Z-211212T0000Z/
Central Carbon County-
Including the city of Rawlins
248 PM MST Fri Dec 10 2021

...BLIZZARD WARNING IN EFFECT FROM 11 PM THIS EVENING TO 5 PM MST
SATURDAY...

* WHAT...Blizzard conditions expected. Winds gusting as high as 
  60 mph.

* WHERE...Rawlins, Sinclair and Hannah

* WHEN...From 11 PM this evening to 5 PM MST Saturday.

* IMPACTS...Widespread blowing snow will cause significant
  reduction in visibility and whiteout conditions. The cold wind 
  chills as low as 20 below zero could cause frostbite on exposed 
  skin in as little as 30 minutes.


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. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 8, 2:15 PM MSTWinter Weather AdvisoryCYSAlbany, Carbon, Converse, Laramie, Platte49 hr

Nearby

Winter Storm Warnings in Wyoming, 2021Winter Storm Warnings in Nebraska, 2021Every winter storm warning in 2021

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.