Alert archive / Wyoming / Winter Storm Warnings in 2020
Winter Storm Warning 21, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Dec 28, 2020, 1:17 AM MST for Albany County, Carbon County, Laramie County, Wyoming. It took effect at Dec 28, 2020, 11:00 AM MST. It was in force for 29 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 28, 2020, 1:17 AM MST (08:17 UTC)
- In effect from
- Dec 28, 2020, 11:00 AM MST
- Expired
- Dec 29, 2020, 4:10 PM MST
- In force
- 29 hr
- Issued by
- NWS Cheyenne, WY
Counties Albany County, WY, Carbon County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 93 km from the middle of the area, began a volume at 08:22 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 |
|---|---|---|---|
| Dec 28, 11:25 PM MST | SNOW 0 | Pine Bluffs, WY | WYDOT CLOSED INTERSTATE 80 EASTBOUND AT REQUEST OF NEBRASKA AUTHORITIES DUE TO WINTER WEATHER CONDITIONS IN THE SOUTHERN NEBRASKA PANHANDLE. OPENING TIME IS UNKNOWN. |
| Dec 29, 2:00 AM MST | SNOW 5.4 | 2 Ne Rob Roy Reservoir, WY | CINNABAR PARK SNOTEL IN THE SNOWY RANGE. ELEVATION 9574 FEET. SNOW WATER EQUIVALENT IS 0.3 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 6 | 2 Nw Jack Creek Campgro, WY | DIVIDE PEAK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8880 FEET. SNOW WATER EQUIVALENT IS 0.4 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 7.2 | 5 Wsw Sugar Loaf Campgr, WY | NORTH FRENCH CREEK SNOTEL IN THE SNOWY RANGE. ELEVATION 10130 FEET. SNOW WATER EQUIVALENT IS 0.4 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 7.5 | 3 Wsw Hog Park Reservoi, WY | WHISKEY PARK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8950 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 7.5 | 8 Ene Hog Park Campgrou, WY | BLACKHALL MOUNTAIN SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9820 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 15 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 9 | 2 E Battle Lake, WY | OLD BATTLE SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 10000 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 9 | 2 Wsw Bottle Creek Camp, WY | WEBBER SPRINGS SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9250 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 10.8 | 3 Wnw Sugar Loaf Campgr, WY | MEDICINE BOW SNOTEL IN THE SNOWY RANGE. ELEVATION 10500 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 10.8 | 4 Nw Hog Park Reservoir, WY | LITTLE SNAKE RIVER SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8915 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 10.8 | Ene Nash Fork Campgroun, WY | BROOKLYN LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10240 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:00 AM MST | SNOW 10.8 | W Deep Creek Campground, WY | SAND LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10050 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 17 HOURS. |
| Dec 29, 2:30 AM MST | SNOW 3 | Cheyenne, WY | SNOW PLOW OPERATOR REPORTS AVERAGE OF 3 INCHES AROUND CHEYENNE FROM THE PARKING LOTS HE HAS PLOWED OUT THIS MORNING. |
| Dec 29, 4:00 AM MST | SNOW 9 | 2 E Battle Lake, WY | OLD BATTLE SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 10000 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | SNOW 9 | 2 Ne Rob Roy Reservoir, WY | CINNABAR PARK SNOTEL IN THE SNOWY RANGE. ELEVATION 9574 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | SNOW 9 | 2 Wsw Bottle Creek Camp, WY | WEBBER SPRINGS SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9250 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | SNOW 9 | 8 Ene Hog Park Campgrou, WY | BLACKHALL MOUNTAIN SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9820 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | SNOW 10 | 5 Wsw Sugar Loaf Campgr, WY | NORTH FRENCH CREEK SNOTEL IN THE SNOWY RANGE. ELEVATION 10130 FEET. SNOW WATER EQUIVALENT IS 0.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 20 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | SNOW 10.8 | 4 Nw Hog Park Reservoir, WY | LITTLE SNAKE RIVER SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8915 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 18 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | HEAVY SNOW 12 | 3 Wnw Sugar Loaf Campgr, WY | MEDICINE BOW SNOTEL IN THE SNOWY RANGE. ELEVATION 10500 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 20 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | HEAVY SNOW 12 | 3 Wsw Hog Park Reservoi, WY | WHISKEY PARK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8950 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 20 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | HEAVY SNOW 12 | Ene Nash Fork Campgroun, WY | BROOKLYN LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10240 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 20 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 4:00 AM MST | HEAVY SNOW 12 | W Deep Creek Campground, WY | SAND LAKE SNOTEL IN THE SNOWY RANGE. ELEVATION 10050 FEET. SNOW WATER EQUIVALENT IS 0.6 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 20 TO 1. ACCUMULATION WAS OVER PAST 19 HOURS. |
| Dec 29, 6:00 AM MST | SNOW 1 | 8 Wnw North Cheyenne, WY | COCORAHS STATION WY-LM-121 CHEYENNE 11.1 NW. |
| Dec 29, 6:00 AM MST | SNOW 1.5 | 2 Ene Cheyenne, WY | COCORAHS STATION WY-LM-82 CHEYENNE 2.0 ENE. |
| Dec 29, 6:00 AM MST | SNOW 2 | 2 Ese Cheyenne, WY | COCORAHS STATION WY-LM-28 CHEYENNE 2.3 ESE. |
| Dec 29, 6:45 AM MST | SNOW 0.9 | 6 Ne Arlington, WY | COCORAHS STATION WY-CR-5 ROCK RIVER 9.6 WSW. |
| Dec 29, 7:00 AM MST | SNOW 1 | 1 W Cheyenne, WY | COCORAHS STATION WY-LM-190 CHEYENNE 1.4 W. |
| Dec 29, 7:00 AM MST | SNOW 1 | 3 Ese Laramie, WY | COCORAHS STATION WY-AB-98 LARAMIE 3.3 ESE. |
| Dec 29, 7:00 AM MST | SNOW 1 | Woods Landing, WY | |
| Dec 29, 7:00 AM MST | SNOW 1.1 | 2 Ese Laramie, WY | COCORAHS STATION WY-AB-171 LARAMIE 2.5 ESE. |
| Dec 29, 7:00 AM MST | SNOW 1.2 | 10 Sw Hillsdale, WY | COCORAHS STATION WY-LM-198 CHEYENNE 10.2 ESE. |
| Dec 29, 7:00 AM MST | SNOW 1.2 | 4 Nnw North Cheyenne, WY | COCORAHS STATION WY-LM-24 CHEYENNE 8.9 N. |
| Dec 29, 7:00 AM MST | SNOW 1.2 | 7 Sse Laramie, WY | CO-OP OBSERVER STATION CMBW4 LARAMIE 7 SSE. |
| Dec 29, 7:00 AM MST | SNOW 1.3 | 1 Sse Laramie, WY | COCORAHS STATION WY-AB-5 LARAMIE 1.3 SE. |
| Dec 29, 7:00 AM MST | SNOW 1.4 | 2 Ne Fox Farm-College, WY | |
| Dec 29, 7:00 AM MST | SNOW 1.5 | 1 Ene Cheyenne, WY | 0.19 IN OF PRECIP. |
| Dec 29, 7:00 AM MST | SNOW 1.5 | 1 S North Cheyenne, WY | COCORAHS STATION WY-LM-164 CHEYENNE 4.0 N. |
| Dec 29, 7:00 AM MST | SNOW 1.5 | 2 Ene Laramie, WY | COCORAHS STATION WY-AB-138 LARAMIE 1.8 ENE. |
| Dec 29, 7:00 AM MST | SNOW 1.5 | 5 N Carpenter, WY | COCORAHS STATION WY-LM-63 CARPENTER 3.9 NNE. |
| Dec 29, 7:00 AM MST | SNOW 1.6 | 2 N Laramie, WY | COCORAHS STATION WY-AB-45 LARAMIE 1.7 N. |
| Dec 29, 7:00 AM MST | SNOW 1.9 | Elk Mountain, WY | COCORAHS STATION WY-CR-18 ELK MOUNTAIN 0.3 SW. |
| Dec 29, 7:00 AM MST | SNOW 2 | 2 E Cheyenne, WY | COCORAHS STATION WY-LM-36 CHEYENNE 2.0 E. |
| Dec 29, 7:00 AM MST | SNOW 2 | 5 Nw Carpenter, WY | COCORAHS STATION WY-LM-147 CARPENTER 4.1 NW. |
| Dec 29, 7:00 AM MST | SNOW 2.3 | Hillsdale, WY | |
| Dec 29, 7:00 AM MST | SNOW 2.8 | 1 Nw Centennial, WY | COCORAHS STATION WY-AB-108 CENTENNIAL 1.1 NNE. |
| Dec 29, 7:00 AM MST | SNOW 3 | Centennial, WY | |
| Dec 29, 7:00 AM MST | SNOW 3.2 | 8 Wsw Hillsdale, WY | COCORAHS STATION WY-LM-142 CHEYENNE 9.6 E. |
| Dec 29, 7:00 AM MST | SNOW 3.9 | 3 Ese Buford, WY | COCORAHS STATION WY-LM-23 WARREN AFB 20.6 WSW. |
| Dec 29, 7:00 AM MST | SNOW 3.9 | 3 Ese Buford, WY | CO-OP OBSERVER STATION BFDW4 BUFORD 4 SE. |
| Dec 29, 7:00 AM MST | SNOW 4.3 | 6 Ne Riverside, WY | COCORAHS STATION WY-CR-32 RIVERSIDE 6.1 NE. |
| Dec 29, 7:27 AM MST | SNOW 1.5 | 3 Ssw North Cheyenne, WY | COCORAHS STATION WY-LM-131 CHEYENNE 3.0 NNW. |
| Dec 29, 7:30 AM MST | SNOW 0.6 | 2 Ene Rock River, WY | COCORAHS STATION WY-AB-170 ROCK RIVER 1.6 ENE. |
| Dec 29, 7:30 AM MST | SNOW 2.5 | 3 N Saratoga, WY | CO-OP OBSERVER STATION SFHW4 3.4 N SARATOGA. |
| Dec 29, 8:00 AM MST | SNOW 1 | 3 Se Laramie, WY | CO-OP OBSERVER STATION LRMW4 3.2 SE LARAMIE. |
| Dec 29, 8:00 AM MST | SNOW 1.5 | 1 Ese Warren Af Base, WY | COCORAHS STATION WY-LM-93 CHEYENNE 2.3 W. |
| Dec 29, 8:00 AM MST | SNOW 1.5 | 3 Ne Cheyenne, WY | COCORAHS STATION WY-LM-193 CHEYENNE 2.6 NE. |
| Dec 29, 8:00 AM MST | SNOW 1.5 | Cheyenne, WY | COCORAHS STATION WY-LM-138 CHEYENNE 0.2 SE. |
| Dec 29, 8:00 AM MST | SNOW 1.6 | 2 Nne Cheyenne, WY | COCORAHS STATION WY-LM-111 CHEYENNE 2.2 NNE. |
| Dec 29, 8:00 AM MST | SNOW 1.9 | 1 Nnw Rawlins, WY | CO-OP OBSERVER STATION RLSW4 RAWLINS 1 N. |
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, 8.3 hours before the alert went out and 274 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
- 889 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
416 WWUS45 KCYS 280817 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 117 AM MST Mon Dec 28 2020 ...ANOTHER PROLONGED SNOWFALL EVENT FOR MONDAY AND TUESDAY... WYZ112-114-290015- /O.UPG.KCYS.WS.A.0014.201228T1300Z-201230T0100Z/ /O.NEW.KCYS.WS.W.0021.201228T1800Z-201230T0100Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 117 AM MST Mon Dec 28 2020 ...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO 6 PM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 15 inches. * WHERE...Snowy and Sierra Madre Ranges to include Centennial and Albany. * WHEN...From 11 AM this morning to 6 PM MST Tuesday. * IMPACTS...Hikers and snowmobilers could become disoriented and lost due to very poor visibility. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-117-290015- /O.NEW.KCYS.WS.W.0021.201228T2100Z-201229T1800Z/ South Laramie Range-South Laramie Range Foothills- Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 117 AM MST Mon Dec 28 2020 ...WINTER STORM WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 inches. Winds gusting as high as 40 mph. * WHERE...The Interstate 80 Summit and adjacent eastern foothills. Includes Buford...Vedauwoo...Federal and Horse Creek. * WHEN...From 2 PM this afternoon to 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ019>021-054-055-WYZ104-105-109-110-113-115-118-119-290015- /O.NEW.KCYS.WW.Y.0035.201228T2100Z-201229T1800Z/ Scotts Bluff County-Banner County-Morrill-Kimball County-Cheyenne- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Carbon County-North Snowy Range Foothills- Upper North Platte River Basin-Laramie Valley- Central Laramie County-East Laramie County- Including the cities of Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Brownson, Sidney, Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Saratoga, Encampment, Bosler, Laramie, Cheyenne, and Pine Bluffs 117 AM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Communities along and south of a line from Muddy Gap to Medicine Bow to Harrisburg to Angora. Includes the Interstate 80 Corridor from Lodgepole to Rawlins. * WHEN...From 2 PM this afternoon to 11 AM MST Tuesday. * 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... 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. && $$ NEZ002-003-095-096-WYZ101>103-106>108-290015- /O.NEW.KCYS.WW.Y.0035.201229T0000Z-201229T1800Z/ Dawes-Box Butte-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- North Laramie Range- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County- Including the cities of Chadron, Chadron St Park, Alliance, Harrison, Agate, Bill, Douglas, Deer Creek, Glenrock, Lusk, Redbird, Garrett, Bordeaux, Wheatland, Guernsey, and Torrington 117 AM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Along and north of a line from Glenrock to Wheatland to Torrington to Alliance. * WHEN...From 5 PM this afternoon to 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
5 follow-up statements
887 WWUS45 KCYS 282115 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 215 PM MST Mon Dec 28 2020 ...ANOTHER PROLONGED SNOWFALL EVENT THROUGH TUESDAY... WYZ112-114-291200- /O.CON.KCYS.WS.W.0021.000000T0000Z-201230T0100Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 215 PM MST Mon Dec 28 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 15 inches. * WHERE...Snowy and Sierra Madre Ranges to include Centennial and Albany. * WHEN...This afternoon to 6 PM MST Tuesday. * IMPACTS...Hikers and snowmobilers could become disoriented and lost due to very poor visibility. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-117-291200- /O.CON.KCYS.WS.W.0021.000000T0000Z-201229T1800Z/ South Laramie Range-South Laramie Range Foothills- Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 215 PM MST Mon Dec 28 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 inches. Winds gusting as high as 40 mph. * WHERE...The Interstate 80 Summit and adjacent eastern foothills. Includes Buford...Vedauwoo...Federal and Horse Creek. * WHEN...From this afternoon to 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact roadways tonight and Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ019>021-054-055-WYZ104-105-109-110-113-115-118-119-291200- /O.CON.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Scotts Bluff County-Banner County-Morrill-Kimball County-Cheyenne- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Carbon County-North Snowy Range Foothills- Upper North Platte River Basin-Laramie Valley- Central Laramie County-East Laramie County- Including the cities of Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Brownson, Sidney, Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Saratoga, Encampment, Bosler, Laramie, Cheyenne, and Pine Bluffs 215 PM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 35 mph. Freezing Drizzle and Fog may also develop overnight and continue through Tuesday morning. * WHERE...Communities along and south of a line from Muddy Gap to Medicine Bow to Harrisburg to Angora. Includes the Interstate 80 Corridor from Lodgepole to Rawlins. Freezing fog and drizzle may develop along the I-80 corridor from the I-80 summit east through Cheyenne to Sidney Nebraska overnight. * WHEN...From this afternoon to 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow, freezing drizzle and fog could significantly reduce visibility. The hazardous conditions will impact roadways tonight into Tuesday. 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. && $$ NEZ002-003-095-096-WYZ101>103-106>108-291200- /O.CON.KCYS.WW.Y.0035.201229T0000Z-201229T1800Z/ Dawes-Box Butte-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- North Laramie Range- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County- Including the cities of Chadron, Chadron St Park, Alliance, Harrison, Agate, Bill, Douglas, Deer Creek, Glenrock, Lusk, Redbird, Garrett, Bordeaux, Wheatland, Guernsey, and Torrington 215 PM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Along and north of a line from Glenrock to Wheatland to Torrington to Alliance. * WHEN...From 5 PM this afternoon to 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could also significantly reduce visibility. The hazardous conditions will impact roadways this evening and Tuesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
306 WWUS45 KCYS 290255 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 755 PM MST Mon Dec 28 2020 ...ANOTHER PROLONGED SNOWFALL EVENT THROUGH TUESDAY... WYZ112-114-291200- /O.CON.KCYS.WS.W.0021.000000T0000Z-201230T0100Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 755 PM MST Mon Dec 28 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 15 inches. * WHERE...Snowy and Sierra Madre Ranges to include Centennial and Albany. * WHEN...Until 6 PM MST Tuesday. * IMPACTS...Hikers and snowmobilers could become disoriented and lost due to very poor visibility. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-117-291200- /O.CON.KCYS.WS.W.0021.000000T0000Z-201229T1800Z/ South Laramie Range-South Laramie Range Foothills- Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 755 PM MST Mon Dec 28 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 inches. Winds gusting as high as 40 mph. * WHERE...The Interstate 80 Summit and adjacent eastern foothills. Includes Buford...Vedauwoo...Federal and Horse Creek. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact roadways tonight and Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ019>021-054-055-WYZ118-119-291200- /O.CON.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Scotts Bluff County-Banner County-Morrill-Kimball County-Cheyenne- Central Laramie County-East Laramie County- Including the cities of Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Brownson, Sidney, Cheyenne, and Pine Bluffs 755 PM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 35 mph. Freezing Drizzle and Fog may also develop overnight and continue through Tuesday morning. * WHERE...Communities along and south of a line from Muddy Gap to Medicine Bow to Harrisburg to Angora. Includes the Interstate 80 Corridor from Lodgepole to Rawlins. Freezing fog and drizzle may develop along the I-80 corridor from the I-80 summit east through Cheyenne to Sidney Nebraska overnight. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow, freezing drizzle and fog could significantly reduce visibility. The hazardous conditions will impact roadways tonight into Tuesday. 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. && $$ NEZ002-003-095-096-WYZ101>103-106>108-291200- /O.CON.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Dawes-Box Butte-North Sioux-South Sioux- Converse County Lower Elevations-Niobrara County- North Laramie Range- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County- Including the cities of Chadron, Chadron St Park, Alliance, Harrison, Agate, Bill, Douglas, Deer Creek, Glenrock, Lusk, Redbird, Garrett, Bordeaux, Wheatland, Guernsey, and Torrington 755 PM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Along and north of a line from Glenrock to Wheatland to Torrington to Alliance. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could also significantly reduce visibility. The hazardous conditions will impact roadways this evening and Tuesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ104-105-109-110-113-115-291200- /O.CON.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Carbon County-North Snowy Range Foothills- Upper North Platte River Basin-Laramie Valley- Including the cities of Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Saratoga, Encampment, Bosler, and Laramie 755 PM MST Mon Dec 28 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST TUESDAY... * WHAT...Periods of snow expected. Total snow accumulations of 1 to 3 inches, with the lower amounts in the upper North Platte River valley and the Laramie Valley. Winds gusting as high as 35 mph. Areas of fog may develop overnight and continue through Tuesday morning. * WHERE...Communities along and south of a line from Muddy Gap to Medicine Bow and the northern Laramie Range. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow fog could significantly reduce visibility. The hazardous conditions will impact roadways tonight into Tuesday. 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. && $$
073 WWUS45 KCYS 290851 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 151 AM MST Tue Dec 29 2020 ...SNOW CONTINUES THIS MORNING FOR PARTS OF SOUTHEAST WYOMING AND NEBRASKA PANHANDLE... WYZ101-103>106-109-110-113-115-291000- /O.CAN.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Converse County Lower Elevations-North Laramie Range- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Laramie Range and Southwest Platte County- Central Carbon County-North Snowy Range Foothills- Upper North Platte River Basin-Laramie Valley- Including the cities of Bill, Douglas, Deer Creek, Glenrock, Garrett, Seminoe Dam, Medicine Bow, Shirley Basin, Bordeaux, Rawlins, Arlington, Elk Mountain, Saratoga, Encampment, Bosler, and Laramie 151 AM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY IS CANCELLED... Light snow will continue this morning...but accumulations are no longer expected. Therefore...the Winter Weather Advisory has been cancelled early. $$ WYZ112-114-291700- /O.CON.KCYS.WS.W.0021.000000T0000Z-201230T0100Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 151 AM MST Tue Dec 29 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow expected. Additional snowfall up to 6 inches expected...with total snow accumulations of 12 to 15 inches. * WHERE...Snowy and Sierra Madre Ranges to include Centennial and Albany. * WHEN...Until 6 PM MST Tuesday. * IMPACTS...Hikers and snowmobilers could become disoriented and lost due to very poor visibility. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-117-291700- /O.CON.KCYS.WS.W.0021.000000T0000Z-201229T1800Z/ South Laramie Range-South Laramie Range Foothills- Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 151 AM MST Tue Dec 29 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Heavy snow expected. Total snow accumulations of 4 to 6 inches. Winds gusting as high as 40 mph. * WHERE...The Interstate 80 Summit and adjacent eastern foothills. Includes Buford...Vedauwoo...Federal and Horse Creek. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Areas of blowing snow could significantly reduce visibility. The hazardous conditions will impact roadways tonight and Tuesday morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ019>021-054-055-WYZ118-119-291700- /O.CON.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Scotts Bluff County-Banner County-Morrill-Kimball County-Cheyenne- Central Laramie County-East Laramie County- Including the cities of Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Brownson, Sidney, Cheyenne, and Pine Bluffs 151 AM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. Freezing Drizzle and Fog may also continue through mid morning. * WHERE...Communities along and south of a line from Cheyenne to Scottsbluff to Angora. Includes the Interstate 80 Corridor from Lodgepole to Cheyenne. Freezing fog and drizzle may continue along the I-80 corridor from Cheyenne to Sidney Nebraska through mid morning. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow, freezing drizzle and fog could significantly reduce visibility. The hazardous conditions will impact roadways tonight into Tuesday. 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. && $$ NEZ002-003-095-096-WYZ102-107-108-291700- /O.CON.KCYS.WW.Y.0035.000000T0000Z-201229T1800Z/ Dawes-Box Butte-North Sioux-South Sioux-Niobrara County- East Platte County-Goshen County- Including the cities of Chadron, Chadron St Park, Alliance, Harrison, Agate, Lusk, Redbird, Wheatland, Guernsey, and Torrington 151 AM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Along and north of a line from Chugwater to Torrington to Alliance. * WHEN...Until 11 AM MST Tuesday. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow could also significantly reduce visibility. The hazardous conditions will impact roadways this evening and Tuesday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
565 WWUS45 KCYS 291758 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1058 AM MST Tue Dec 29 2020 ...SNOW CONTINUES THIS MORNING FOR PARTS OF SOUTHEAST WYOMING AND NEBRASKA PANHANDLE... WYZ116-117-300000- /O.EXP.KCYS.WS.W.0021.000000T0000Z-201229T1800Z/ /O.EXB.KCYS.WW.Y.0035.201229T1800Z-201230T0000Z/ South Laramie Range-South Laramie Range Foothills- Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, and Horse Creek 1058 AM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY IN EFFECT 11 AM UNTIL 5 PM MST THIS AFTERNOON... ...WINTER STORM WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Light snow showers possible through this afternoon. Blowing snow and ground blizzard-like conditions with winds gusting as high as 40 mph. * WHERE...South Laramie Range, including I-80 between Laramie and Cheyenne. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow and fog could significantly reduce visibility. The hazardous conditions will impact roadways through the afternoon and may effect 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. && $$ WYZ112-114-300100- /O.CON.KCYS.WS.W.0021.000000T0000Z-201230T0100Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 1058 AM MST Tue Dec 29 2020 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MST THIS EVENING... * WHAT...Heavy snow expected. Additional snowfall up to 1 inches expected...with total snow accumulations of 12 to 19 inches. * WHERE...Snowy and Sierra Madre Ranges to include Centennial and Albany. * WHEN...Until 6 PM MST Tuesday. * IMPACTS...Hikers and snowmobilers could become disoriented and lost due to very poor visibility. Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ019>021-054-055-WYZ118-119-300000- /O.EXT.KCYS.WW.Y.0035.000000T0000Z-201230T0000Z/ Scotts Bluff County-Banner County-Morrill-Kimball County-Cheyenne- Central Laramie County-East Laramie County- Including the cities of Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Brownson, Sidney, Cheyenne, and Pine Bluffs 1058 AM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Light snow showers possible through this afternoon. Blowing snow and ground blizzard-like conditions with winds gusting as high as 35 mph. * WHERE...Communities along and south of a line from Cheyenne to Scottsbluff to Angora. Includes the Interstate 80 Corridor from Lodgepole to Cheyenne. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow and fog could reduce visibility. The hazardous conditions will impact roadways through the afternoon and may effect the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling, especially in open areas. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ002-003-095-096-WYZ102-107-108-300000- /O.EXT.KCYS.WW.Y.0035.000000T0000Z-201230T0000Z/ Dawes-Box Butte-North Sioux-South Sioux-Niobrara County- East Platte County-Goshen County- Including the cities of Chadron, Chadron St Park, Alliance, Harrison, Agate, Lusk, Redbird, Wheatland, Guernsey, and Torrington 1058 AM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Light snow showers possible through this afternoon. Blowing snow and ground blizzard-like conditions with winds gusting as high as 35 mph. * WHERE...Along and north of a line from Chugwater to Torrington to Alliance. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. Patchy blowing snow and fog could reduce visibility. The hazardous conditions will impact roadways through the afternoon and may effect the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
158 WWUS45 KCYS 292310 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 410 PM MST Tue Dec 29 2020 ...WINTER WEATHER HEADLINES HAVE BEEN CANCELLED AS CONDITIONS CONTINUE TO IMPROVE ACROSS SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE... WYZ112-114-300015- /O.CAN.KCYS.WS.W.0021.000000T0000Z-201230T0100Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 410 PM MST Tue Dec 29 2020 ...WINTER STORM WARNING IS CANCELLED... Snowfall has move out of the area away from the Sierra Madre and Snowy Ranges this afternoon. Therefore, the Winter Storm Warning was cancelled. Blowing snow is still possible tonight with the fresh snowpack and wind gusts up to 40 MPH. $$ NEZ002-003-019>021-054-055-095-096-WYZ102-107-108-116>119-300015- /O.CAN.KCYS.WW.Y.0035.000000T0000Z-201230T0000Z/ Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County-Niobrara County- East Platte County-Goshen County-South Laramie Range- South Laramie Range Foothills-Central Laramie County- East Laramie County- Including the cities of Chadron, Chadron St Park, Alliance, Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Sidney, Brownson, Harrison, Agate, Lusk, Redbird, Wheatland, Guernsey, Torrington, Buford, Pumpkin Vine, Vedauwoo, Whitaker, Federal, Horse Creek, Cheyenne, and Pine Bluffs 410 PM MST Tue Dec 29 2020 ...WINTER WEATHER ADVISORY IS CANCELLED... Snowfall has moved out of the area this afternoon as skies have mostly cleared up across southeast Wyoming and the Nebraska Panhandle. Local webcams have shown limited drifting snow in spots with 25 to 35 MPH wind gusts. Conditions continue to improve across the area and therefore the Winter Weather Advisory was cancelled. A few slick spots on roadways may remain overnight. $$ Brothers
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 28, 1:17 AM MST | Winter Weather Advisory | CYS | Albany, Carbon, Converse, Goshen, Laramie, Niobrara and 1 more | 39 hr |
| Dec 28, 4:02 AM MST | Dense Fog Advisory | CYS | Converse, Goshen, Niobrara, Platte | 7 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.