Alert archive / Wyoming / Winter Storm Warnings in 2021

Winter Storm Warning 3, NWS Cheyenne, WY

February 2, 2021Albany County, Carbon County, Wyoming

NWS Cheyenne, WY issued this winter storm warning at Feb 2, 2021, 12:43 PM MST for Albany County, Carbon County, Wyoming. It took effect at Feb 2, 2021, 11:00 PM MST. It was in force for 36 hr. 25 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 2, 2021, 12:43 PM MST (19:43 UTC)
In effect from
Feb 2, 2021, 11:00 PM MST
Expired
Feb 4, 2021, 11:00 AM MST
In force
36 hr
Issued by
NWS Cheyenne, WY

Counties Albany County, WY, Carbon County, WY

The radar

The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 19:48 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
Feb 3, 12:46 PM MSTHEAVY SNOW 0.13 Ese Elk Mountain, WYSNOW SQUALL. REDUCE VISIBILITY TO ONE QUARTER MILE FOR 10 MINUTES. I80 COUNTY ROAD 402.
Feb 3, 1:04 PM MSTHEAVY SNOW 0.11 Nnw Arlington, WYSNOW SQUALL. REDUCE VISIBILITY UNDER ONE QUARTER MILE FOR SIX MINUTES. I80 ARLINGTON.
Feb 3, 1:14 PM MSTHEAVY SNOW 0.17 Ese Arlington, WYSNOW SQUALL. REDUCE VISIBILITY UNDER ONE QUARTER MILE FOR 14 MINUTES. I80 COOPER COVE.
Feb 3, 1:38 PM MSTHEAVY SNOW 0.17 Ese Arlington, WYSNOW SQUALL. REDUCE VISIBILITY UNDER ONE QUARTER MILE FOR FOUR MINUTES. I80 COOPER COVE.
Feb 3, 3:00 PM MSTHEAVY SNOW 0.1Pumpkin Vine, WYSNOW SQUALL. REDUCE VISIBILITY UNDER ONE QUARTER MILE FOR SIX MINUTES. US287 - PUMPKIN VINE.
Feb 3, 3:04 PM MSTHEAVY SNOW 0.111 Se Arlington, WYSNOW SQUALL. REDUCE VISIBILITY UNDER ONE QUARTER MILE FOR EIGHT MINUTES. I80 STROUSS HILL.
Feb 3, 3:30 PM MSTHEAVY SNOW 0.14 Nnw Vedauwoo, WYSNOW SQUALL. REDUCE VISIBILITY UNDER ONE QUARTER MILE FOR TEN MINUTES. I80/US30 - SUMMIT EAST.
Feb 4, 7:00 AM MSTSNOW 0.51 Nw Centennial, WYCOCORAHS STATION WY-AB-108 CENTENNIAL 1.1 NNE.
Feb 4, 7:00 AM MSTSNOW 0.66 Sse Laramie, WYCOCORAHS STATION WY-AB-160 LARAMIE 6.1 SSE.
Feb 4, 7:00 AM MSTSNOW 2.6Elk Mountain, WYCOCORAHS STATION WY-CR-18 ELK MOUNTAIN 0.3 SW.
Feb 4, 7:30 AM MSTSNOW 1.53 N Saratoga, WYCO-OP OBSERVER STATION SFHW4 3.4 N SARATOGA.
Feb 4, 11:00 AM MSTSNOW 3Nw Ryan Park Campground, WYSOUTH BRUSH CREEK SNOTEL IN THE SNOWY RANGE. ELEVATION 8440 FEET. SNOW WATER EQUIVALENT IS .2 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 4.52 E Battle Lake, WYOLD BATTLE SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 10000 FEET. SNOW WATER EQUIVALENT IS .3 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 4.52 Ne Rob Roy Reservoir, WYCINNABAR PARK SNOTEL IN THE SNOWY RANGE. ELEVATION 9574 FEET. SNOW WATER EQUIVALENT IS .3 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 4.52 Nw Jack Creek Campgro, WYDIVIDE PEAK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8880 FEET. SNOW WATER EQUIVALENT IS .3 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 611 Nw Jack Creek Campgr, WYSAGE CREEK BASIN SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 7850 FEET. SNOW WATER EQUIVALENT IS .4 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 64 Nw Hog Park Reservoir, WYLITTLE SNAKE RIVER SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8915 FEET. SNOW WATER EQUIVALENT IS .4 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 67 Wsw Battle Creek Camp, WYBATTLE MOUNTAIN SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 7440 FEET. SNOW WATER EQUIVALENT IS .4 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 7.52 Wsw Bottle Creek Camp, WYWEBBER SPRINGS SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9250 FEET. SNOW WATER EQUIVALENT IS .5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 7.55 Wsw Sugar Loaf Campgr, WYNORTH FRENCH CREEK SNOTEL IN THE SNOWY RANGE. ELEVATION 10130 FEET. SNOW WATER EQUIVALENT IS .5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 7.5W Deep Creek Campground, WYSAND LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10050 FEET. SNOW WATER EQUIVALENT IS .5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 91 Nw Whiskey Park, WYWHISKEY PARK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8950 FEET. SNOW WATER EQUIVALENT IS .6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 98 Ene Hog Park Campgrou, WYBLACKHALL MOUNTAIN SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9820 FEET. SNOW WATER EQUIVALENT IS .6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTSNOW 9Ene Nash Fork Campgroun, WYBROOKLYN LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10240 FEET. SNOW WATER EQUIVALENT IS .6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.
Feb 4, 11:00 AM MSTHEAVY SNOW 123 Wnw Sugar Loaf Campgr, WYMEDICINE BOW SNOTEL IN THE SNOWY RANGE. ELEVATION 10500 FEET. SNOW WATER EQUIVALENT IS .8 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1.

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 12:00Z, 7.7 hours before the alert went out and 230 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, Riverton, WY at 12:00Z on 2021-02-02Temperature 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 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2021-02-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 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
2366 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

114 
WWUS45 KCYS 021943
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1243 PM MST Tue Feb 2 2021

...Heavy Mountain Snow and Strong Westerly Winds for the Snowy
and Sierra Madre Ranges Tonight Through Thursday...

WYZ112-114-031200-
/O.UPG.KCYS.WS.A.0002.210203T0600Z-210204T1800Z/
/O.NEW.KCYS.WS.W.0003.210203T0600Z-210204T1800Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
1243 PM MST Tue Feb 2 2021

...WINTER STORM WARNING IN EFFECT FROM 11 PM THIS EVENING TO
11 AM MST THURSDAY...

* WHAT...Heavy snow and some blowing snow expected. Total snow
  accumulations of 7 to 14 inches. Winds gusting as high as 60
  mph. Snow accumulations will be less on the leeward and south
  faces slopes.

* WHERE...Sierra Madre and Snowy Ranges.

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

* IMPACTS...Travel could be very difficult to impossible. Hikers
  and outdoor recreationists may become disoriented or lost with
  near zero visibilities in moderate snow and blowing snow. The 
  cold wind chills as low as 15 below zero could result in 
  hypothermia if precautions are not taken.

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.

&&

$$

WYZ110-031200-
/O.NEW.KCYS.WW.Y.0006.210204T0000Z-210204T1600Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
1243 PM MST Tue Feb 2 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM WEDNESDAY TO 9 AM
MST THURSDAY...

* WHAT...Snow and drifting snow expected. Total snow accumulations
  of 2 to 4 inches, with the highest amounts near the Snowy Range.
  Winds gusting as high as 40 mph.

* WHERE...The Northern Snowy Range Foothills.

* WHEN...From 5 PM Wednesday to 9 AM MST Thursday.

* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means that
snow and strong winds will create restricted visibilities and
drifting snow along area roadways. Use caution when
traveling...especially in open areas.

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

&&

$$
5 follow-up statements
364 
WWUS45 KCYS 030926
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
226 AM MST Wed Feb 3 2021

...Heavy Mountain Snow and Strong Westerly Winds for the Snowy
and Sierra Madre Ranges Today Through Thursday...

WYZ112-114-040000-
/O.CON.KCYS.WS.W.0003.000000T0000Z-210204T1800Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
226 AM MST Wed Feb 3 2021

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

* WHAT...Heavy snow and some blowing snow expected. Total snow 
  accumulations of 7 to 14 inches. Winds gusting as high as 60 
  mph. Snow accumulations will be less on the leeward and south 
  faces slopes.

* WHERE...Sierra Madre and Snowy Ranges.

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

* IMPACTS...Travel could be very difficult to impossible. Hikers 
  and outdoor recreationists may become disoriented or lost with 
  near zero visibilities in moderate snow and blowing snow. The 
  cold wind chills as low as 15 below zero could result in 
  hypothermia if precautions are not taken.

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.

&&

$$

WYZ110-040000-
/O.CON.KCYS.WW.Y.0006.210204T0000Z-210204T1600Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
226 AM MST Wed Feb 3 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS
AFTERNOON TO 9 AM MST THURSDAY...

* WHAT...Snow and drifting snow expected. Total snow 
  accumulations of 2 to 4 inches, with the highest amounts near 
  the Snowy Range. Winds gusting as high as 40 mph.

* WHERE...The Northern Snowy Range Foothills, including the
  Interstate 80 corridor near Arlington and Elk Mountain. 

* WHEN...From 5 PM Wednesday to 9 AM MST Thursday.

* IMPACTS...Hazardous travel conditions due to icy or snow covered
  roads and reduced visibilities in falling or 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.

&&

$$

CLH
620 
WWUS45 KCYS 032144
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
244 PM MST Wed Feb 3 2021

...Heavy Mountain Snow and Strong Westerly Winds for the Snowy
and Sierra Madre Ranges Today Through Thursday...

WYZ112-114-040545-
/O.CON.KCYS.WS.W.0003.000000T0000Z-210204T1800Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
244 PM MST Wed Feb 3 2021

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

* WHAT...Heavy snow and some blowing snow expected. Total snow 
  accumulations of 7 to 14 inches. Winds gusting as high as 60 
  mph. Snow accumulations will be less on the leeward and south 
  faces slopes.

* WHERE...Sierra Madre and Snowy Ranges.

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

* IMPACTS...Travel could be very difficult to impossible. Hikers 
  and outdoor recreationists may become disoriented or lost with 
  near zero visibilities in moderate snow and blowing snow. The 
  cold wind chills as low as 15 below zero could result in 
  hypothermia if precautions are not taken.

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.

&&

$$

WYZ110-040545-
/O.EXT.KCYS.WW.Y.0006.210203T2200Z-210204T1200Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
244 PM MST Wed Feb 3 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 AM MST
THURSDAY...

* WHAT...Moderate to Heavy Snow and drifting snow expected. Total
  snow accumulations of 2 to 4 inches, with the highest amounts 
  near the Snowy Range. Winds gusting as high as 40 mph. 

* WHERE...The Northern Snowy Range Foothills, including the 
  Interstate 80 corridor near Arlington and Elk Mountain.

* WHEN...Until 5 AM MST Thursday.

* IMPACTS...Hazardous travel conditions due to icy or snow covered
  roads and reduced visibilities in falling or blowing snow.
  Whiteout conditions will be possible at times, especially 
  during the remainder of the afternoon into the early evening. 

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.

&&

$$
010 
WWUS45 KCYS 040000
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
500 PM MST Wed Feb 3 2021

...Heavy Mountain Snow and Strong Westerly Winds for the Snowy
and Sierra Madre Ranges Today Through Thursday...

...Blowing snow and reduced visibilities will effect portions of
the I-80 corridor though Thursday morning...

WYZ112-114-041200-
/O.CON.KCYS.WS.W.0003.000000T0000Z-210204T1800Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
500 PM MST Wed Feb 3 2021

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

* WHAT...Heavy snow and some blowing snow expected. Total snow 
  accumulations of 7 to 14 inches. Winds gusting as high as 60 
  mph. Snow accumulations will be less on the leeward and south 
  faces slopes.

* WHERE...Sierra Madre and Snowy Ranges.

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

* IMPACTS...Travel could be very difficult to impossible. Hikers 
  and outdoor recreationists may become disoriented or lost with 
  near zero visibilities in moderate snow and blowing snow. The 
  cold wind chills as low as 15 below zero could result in 
  hypothermia if precautions are not taken.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

$$

WYZ116-041200-
/O.EXB.KCYS.WW.Y.0006.210204T0000Z-210204T1200Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
500 PM MST Wed Feb 3 2021

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST THURSDAY...

* WHAT...Snow and blowing and drifting snow expected. Total snow 
  accumulations of up to two inches. Winds gusting as high as 40 
  mph.

* WHERE...The I-80 Summit, along the I-80 corridor between Laramie
  and Cheyenne, and the 287 corridor near the Colorado border
  including Pumpkin Vine.

* WHEN...Until 5 AM MST Thursday.

* IMPACTS...Hazardous travel conditions due to icy or snow 
  covered roads and reduced visibilities in falling or blowing 
  snow. Whiteout conditions will be possible at times, 
  especially during the remainder of the afternoon into the 
  early evening.


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.

&&

$$

WYZ110-041200-
/O.CON.KCYS.WW.Y.0006.000000T0000Z-210204T1200Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
500 PM MST Wed Feb 3 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST
THURSDAY...

* WHAT...Moderate to Heavy Snow and drifting snow expected. 
  Total snow accumulations of 2 to 4 inches, with the highest 
  amounts near the Snowy Range. Winds gusting as high as 40 mph.

* WHERE...The Northern Snowy Range Foothills, including the 
  Interstate 80 corridor near Arlington and Elk Mountain.

* WHEN...Until 5 AM MST Thursday.

* IMPACTS...Hazardous travel conditions due to icy or snow 
  covered roads and reduced visibilities in falling or blowing 
  snow. Whiteout conditions will be possible at times, 
  especially during the remainder of the afternoon into the 
  early evening.

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.

&&

$$
148 
WWUS45 KCYS 040934
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
234 AM MST Thu Feb 4 2021

WYZ112-114-041800-
/O.CON.KCYS.WS.W.0003.000000T0000Z-210204T1800Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
234 AM MST Thu Feb 4 2021

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

* WHAT...Heavy snow and some blowing snow expected. Total snow 
  accumulations of 7 to 14 inches. Winds gusting as high as 60 
  mph. Snow accumulations will be less on the leeward and south 
  faces slopes.

* WHERE...Sierra Madre and Snowy Ranges.

* WHEN...Until 11 AM MST this morning. Heavy snow will return to
  the area later tonight and Friday, with significant
  accumulations possible through Saturday.

* IMPACTS...Travel could be very difficult to impossible. Hikers 
  and outdoor recreationists may become disoriented or lost with 
  near zero visibilities in moderate snow and blowing snow. The 
  cold wind chills as low as 15 below zero could result in 
  hypothermia if precautions are not taken.

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.

&&

$$

WYZ110-041200-
/O.CON.KCYS.WW.Y.0006.000000T0000Z-210204T1200Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
234 AM MST Thu Feb 4 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY
THIS MORNING...

* WHAT...Areas of blowing and drifting snow expected. Winds
  gusting as high as 30 mph.

* WHERE...The Northern Snowy Range Foothills, including the 
  Interstate 80 corridor near Arlington and Elk Mountain.

* WHEN...Until 5 AM MST this morning. 

* IMPACTS...Hazardous travel conditions due to slick road
  conditions and reduced visibilities in 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.

&&

$$

WYZ116-041200-
/O.CON.KCYS.WW.Y.0006.000000T0000Z-210204T1200Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
234 AM MST Thu Feb 4 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY
THIS MORNING...

* WHAT...Areas of blowing and drifting snow expected. Winds
  gusting as high as 30 mph.

* WHERE...South Laramie Range and adjacent Foothills including
  Interstate 80 between Laramie and Cheyenne. 

* WHEN...Until 5 AM MST this morning. 

* IMPACTS...Hazardous travel conditions due to slick road
  conditions and reduced visibilities in 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.

&&

$$

CLH
985 
WWUS45 KCYS 041751
WSWCYS

URGENT - WINTER WEATHER MESSAGE
National Weather Service Cheyenne WY
1051 AM MST Thu Feb 4 2021

...WINTER STORM WARNING IS CANCELLED...

SNOTELs are extremely low the mountain zones from the accumulation of
yesterday's precipitation. Thus, the Winter Storm Warning has 
been cancelled this morning. 

WYZ112-114-041900-
/O.EXP.KCYS.WS.W.0003.000000T0000Z-210204T1800Z/
Sierra Madre Range-Snowy Range-
Including the cities of Centennial and Albany
1051 AM MST Thu Feb 4 2021

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

Due to the precipitation moving out of the area, the winter storm
warning will be allowed to expired.

$$

RC/AW

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 2, 12:46 AM MSTHigh Wind WatchCYSAlbany, Carbon, Laramie, Platte25 hr
Feb 2, 12:53 AM MSTWinter Storm WatchCYSAlbany, Carbon12 hr
Feb 2, 12:43 PM MSTHigh Wind WarningCYSAlbany, Carbon, Laramie, Platte28 hr
Feb 2, 12:43 PM MSTWinter Weather AdvisoryCYSAlbany, Carbon, Laramie40 hr

Nearby

Winter Storm Warnings in Wyoming, 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.