Alert archive / Wyoming / Winter Storm Warnings in 2024
Winter Storm Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this winter storm warning at Mar 29, 2024, 2:58 AM MDT for Albany County, Carbon County, Wyoming. It took effect at Mar 29, 2024, 6:00 PM MDT. It was in force for 48 hr. 22 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
- Mar 29, 2024, 2:58 AM MDT (08:58 UTC)
- In effect from
- Mar 29, 2024, 6:00 PM MDT
- Expired
- Mar 31, 2024, 6:00 PM MDT
- In force
- 48 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 08:58 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 |
|---|---|---|---|
| Mar 30, 6:45 AM MDT | SNOW 1.6 | 6 Ne Arlington, WY | Cocorahs station WY-CR-5 Rock River 9.6 WSW. |
| Mar 30, 7:00 AM MDT | SNOW 0.5 | 2 Ene Laramie, WY | Cocorahs station WY-AB-138 Laramie 1.8 ENE. |
| Mar 30, 7:00 AM MDT | SNOW 0.7 | 1 Sse Laramie, WY | Cocorahs station WY-AB-5 Laramie 1.3 SE. |
| Mar 30, 7:00 AM MDT | SNOW 0.7 | 1 Sse Laramie, WY | CO-OP Observer station ADFW4 Laramie 1 SE. |
| Mar 30, 7:00 AM MDT | SNOW 0.9 | 1 N Laramie, WY | Cocorahs station WY-AB-196 Laramie 1.4 N. |
| Mar 30, 7:00 AM MDT | SNOW 0.9 | 1 Nne Laramie, WY | Cocorahs station WY-AB-186 Laramie 1.2 NNE. |
| Mar 30, 7:00 AM MDT | SNOW 0.9 | 2 Ene Laramie, WY | Cocorahs station WY-AB-180 Laramie 1.6 ENE. |
| Mar 30, 7:00 AM MDT | SNOW 1.1 | 7 Ene Bosler, WY | Cocorahs station WY-AB-188 Bosler 8.0 NE. |
| Mar 30, 7:00 AM MDT | SNOW 2.1 | 1 Nw Centennial, WY | Cocorahs station WY-AB-108 Centennial 1.1 NNE. |
| Mar 30, 7:00 AM MDT | SNOW 2.7 | Elk Mountain, WY | Cocorahs station WY-CR-18 Elk Mountain 0.3 SW. |
| Mar 30, 7:00 AM MDT | SNOW 4 | 4 W Rawlins, WY | Cocorahs station WY-CR-14 Rawlins 4.3 W. |
| Mar 30, 7:00 AM MDT | SNOW 4.4 | 2 S Elk Mountain, WY | Cocorahs station WY-CR-4 Elk Mountain 2.1 S. |
| Mar 30, 7:45 AM MDT | SNOW 5 | 3 Nw Rawlins, WY | Received via social media. Estimated nearly 5 inches. Still snowing. |
| Mar 30, 8:00 AM MDT | SNOW 0.7 | 3 Se Laramie, WY | CO-OP Observer station LRMW4 3.2 SE Laramie. |
| Mar 30, 8:00 AM MDT | SNOW 5 | 1 Nnw Rawlins, WY | CO-OP Observer station RLSW4 Rawlins 1 N. |
| Mar 30, 8:15 AM MDT | SNOW 3.5 | Rawlins, WY | Estimated 3-4 inches snow overnight. Snow still falling. |
| Mar 30, 10:00 PM MDT | SNOW 12.9 | 8 Sw Skyline, WY | BLACKHALL MOUNTAIN SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9838 FEET. SNOW WATER EQUIVALENT IS 1.1 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 11.7 TO 1. ACCUMULATION WAS OVER 28 HOURS ENDING AT 3/30 10:00 PM CRITERIA REACHED AT APPROX. 3/30 10:00 PM. |
| Mar 30, 10:00 PM MDT | SNOW 13.3 | 8 Wsw Encampment, WY | WEBBER SPRINGS SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9260 FEET. SNOW WATER EQUIVALENT IS 1.2 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 11.1 TO 1. ACCUMULATION WAS OVER 23 HOURS ENDING AT 3/30 10:00 PM CRITERIA REACHED AT APPROX. 3/30 7:00 PM. |
| Mar 30, 10:00 PM MDT | SNOW 14.8 | 12 Sw Encampment, WY | LITTLE SNAKE RIVER SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8928 FEET. SNOW WATER EQUIVALENT IS 1.4 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 10.6 TO 1. ACCUMULATION WAS OVER 22 HOURS ENDING AT 3/30 10:00 PM CRITERIA REACHED AT APPROX. 3/30 7:00 PM. |
| Mar 30, 10:00 PM MDT | SNOW 16.8 | 14 Wnw Centennial, WY | MEDICINE BOW SNOTEL IN THE SNOWY RANGE. ELEVATION 10512 FEET. SNOW WATER EQUIVALENT IS 1.3 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 12.9 TO 1. ACCUMULATION WAS OVER 22 HOURS ENDING AT 3/30 10:00 PM CRITERIA REACHED AT APPROX. 03/30 17:00. |
| Mar 30, 11:00 PM MDT | SNOW 13.4 | 20 Wnw Encampment, WY | DIVIDE PEAK SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 8730 FEET. SNOW WATER EQUIVALENT IS 1.3 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 10.3 TO 1. ACCUMULATION WAS OVER 25 HOURS ENDING AT 3/30 11:00 PM CRITERIA REACHED AT APPROX. 3/30 9:00 PM. |
| Mar 30, 11:00 PM MDT | SNOW 18.9 | 10 Wsw Encampment, WY | OLD BATTLE SNOTEL IN THE SIERRA MADRE RANGE. ELEVATION 9860 FEET. SNOW WATER EQUIVALENT IS 1.5 INCHES AND THE SNOW TO LIQUID RATIO USED WAS 12.6 TO 1. ACCUMULATION WAS OVER 23 HOURS ENDING AT 3/30 11:00 PM CRITERIA REACHED AT APPROX. 3/30 3:00 PM. |
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, 9.0 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1227 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
999 WWUS45 KCYS 290858 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 258 AM MDT Fri Mar 29 2024 WYZ112-300000- /O.NEW.KCYS.WS.W.0013.240330T0000Z-240401T0000Z/ /O.CON.KCYS.WW.Y.0017.000000T0000Z-240329T1200Z/ Sierra Madre Range- 258 AM MDT Fri Mar 29 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING... ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations of up to one inch. For the Winter Storm Warning, heavy snow expected. Total snow accumulations of 1 to 2 feet. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range. * WHEN...For the Winter Weather Advisory, until 6 AM MDT early this morning. For the Winter Storm Warning, from 6 PM this evening to 6 PM MDT Sunday. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. 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. && $$ WYZ114-300000- /O.NEW.KCYS.WS.W.0013.240330T0000Z-240401T0000Z/ Snowy Range- Including the cities of Centennial and Albany 258 AM MDT Fri Mar 29 2024 ...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 16 inches. Winds gusting as high as 50 mph. * WHERE...Snowy Range. * WHEN...From 6 PM this evening to 6 PM MDT Sunday. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-300000- /O.NEW.KCYS.WW.Y.0018.240329T1800Z-240330T1800Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 258 AM MDT Fri Mar 29 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM NOON TODAY TO NOON MDT SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...South Laramie Range. * WHEN...From noon today to noon MDT Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
8 follow-up statements
973 WWUS45 KCYS 291140 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 540 AM MDT Fri Mar 29 2024 WYZ112-300000- /O.EXP.KCYS.WW.Y.0017.000000T0000Z-240329T1200Z/ /O.CON.KCYS.WS.W.0013.240330T0000Z-240401T0000Z/ Sierra Madre Range- 540 AM MDT Fri Mar 29 2024 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING... * WHAT...Heavy snow expected. Total snow accumulations of 1 to 2 feet. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range. * WHEN...For the Winter Weather Advisory, until 6 AM MDT early this morning. For the Winter Storm Warning, from 6 PM this evening to 6 PM MDT Sunday. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ114-300000- /O.CON.KCYS.WS.W.0013.240330T0000Z-240401T0000Z/ Snowy Range- Including the cities of Centennial and Albany 540 AM MDT Fri Mar 29 2024 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 16 inches. Winds gusting as high as 50 mph. * WHERE...Snowy Range. * WHEN...From 6 PM this evening to 6 PM MDT Sunday. * IMPACTS...Travel could be very difficult to impossible. Patchy blowing snow could significantly reduce visibility. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ116-300000- /O.CON.KCYS.WW.Y.0018.240329T1800Z-240330T1800Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 540 AM MDT Fri Mar 29 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO NOON MDT SATURDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...South Laramie Range. * WHEN...From noon today to noon MDT Saturday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the evening commute. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
118 WWUS45 KCYS 292102 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 302 PM MDT Fri Mar 29 2024 WYZ112-114-301115- /O.CON.KCYS.WS.W.0013.240330T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 302 PM MDT Fri Mar 29 2024 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM MDT SUNDAY... * WHAT...Heavy snow expected. Total snow accumulations of 12 to 18 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...From 6 PM this evening to 6 PM MDT Sunday. * IMPACTS...Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ116-301115- /O.CON.KCYS.WW.Y.0018.000000T0000Z-240330T1800Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 302 PM MDT Fri Mar 29 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT SATURDAY... * WHAT...Snow. Total snow accumulations of 2 to 5 inches. Winds gusting as high as 40 mph. * WHERE...South Laramie Range. * WHEN...Until noon MDT Saturday. * IMPACTS...Plan on slippery road conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
913 WWUS45 KCYS 300957 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 357 AM MDT Sat Mar 30 2024 WYZ112-114-310000- /O.CON.KCYS.WS.W.0013.000000T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 357 AM MDT Sat Mar 30 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * WHAT...Heavy mountain snow expected. Total snow accumulations of 12 to 18 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...Until 6 PM MDT Sunday. * IMPACTS...Dangerous mountain travel due to icy, snow packed roads and significantly reduced visibilities in falling and blowing snow. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ103>105-109>111-113-310000- /O.NEW.KCYS.WW.Y.0019.240331T0000Z-240331T1500Z/ North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-Upper North Platte River Basin- Including the cities of Garrett, Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Baggs, Saratoga, and Encampment 357 AM MDT Sat Mar 30 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM MDT SUNDAY... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches. Higher amounts in excess of 6 inches will be possible under localized heavy snow bands. * WHERE...Much of Carbon and Albany counties including Rawlins, Saratoga, Arlington, Elk Mountain, Shirley Basin, and the North Laramie Range. * WHEN...From 6 PM this evening to 9 AM MDT Sunday. * IMPACTS...Hazardous travel conditions due to icy, snow packed roads and reduced visibilities in moderate to heavy snow. * ADDITIONAL DETAILS...Snow totals are expected to be highly variable due to the banded nature of the snowfall. Conditions may change significantly over very short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ116-301800- /O.CON.KCYS.WW.Y.0018.000000T0000Z-240330T1800Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 357 AM MDT Sat Mar 30 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Snow. Total snow accumulations of 1 to 3 inches. * WHERE...South Laramie Range. * WHEN...Until noon MDT Saturday. * IMPACTS...Plan on slippery road conditions. 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. && $$ CLH
654 WWUS45 KCYS 301438 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 838 AM MDT Sat Mar 30 2024 WYZ116-301545- /O.CAN.KCYS.WW.Y.0018.000000T0000Z-240330T1800Z/ South Laramie Range- Including the cities of Buford, Pumpkin Vine, and Vedauwoo 838 AM MDT Sat Mar 30 2024 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has ended across the area. However, dense fog remains in place. The Winter Weather Advisory has been replaced with a Dense Fog Advisory which is in effect until noon today. Patchy icing will remain possible for the next few areas. $$ WYZ112-114-310000- /O.CON.KCYS.WS.W.0013.000000T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 838 AM MDT Sat Mar 30 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * WHAT...Heavy mountain snow expected. Total snow accumulations of 12 to 18 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...Until 6 PM MDT Sunday. * IMPACTS...Dangerous mountain travel due to icy, snow packed roads and significantly reduced visibilities in falling and blowing snow. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ103>105-109>111-113-310000- /O.EXT.KCYS.WW.Y.0019.240330T1438Z-240331T1500Z/ North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-Upper North Platte River Basin- Including the cities of Garrett, Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Baggs, Saratoga, and Encampment 838 AM MDT Sat Mar 30 2024 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 9 AM MDT SUNDAY... * WHAT...Snow expected. A lull in snowfall is possible Saturday afternoon before another round moves in this evening. Additional snow accumulations of 2 to 6 inches. Higher amounts in excess of 6 inches will be possible under localized heavy snow bands. * WHERE...Much of Carbon and Albany counties including Rawlins, Saratoga, Arlington, Elk Mountain, Shirley Basin, and the North Laramie Range. * WHEN...Until 9 AM MDT Sunday. * IMPACTS...Hazardous travel conditions due to icy, snow packed roads and reduced visibilities in moderate to heavy snow. * ADDITIONAL DETAILS...Snow totals are expected to be highly variable due to the banded nature of the snowfall. Conditions may change significantly over very short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
835 WWUS45 KCYS 302108 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 308 PM MDT Sat Mar 30 2024 WYZ112-114-311200- /O.CON.KCYS.WS.W.0013.000000T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 308 PM MDT Sat Mar 30 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SUNDAY... * WHAT...Heavy mountain snow expected. Total snow accumulations of 12 to 18 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...Until 6 PM MDT Sunday. * IMPACTS...Dangerous mountain travel due to icy, snow packed roads and significantly reduced visibilities in falling and blowing snow. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ101-102-311200- /O.EXB.KCYS.WW.Y.0019.240331T0600Z-240331T1800Z/ Converse County Lower Elevations-Niobrara County- Including the cities of Bill, Douglas, Deer Creek, Glenrock, Lusk, and Redbird 308 PM MDT Sat Mar 30 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO NOON MDT SUNDAY... * WHAT...Wet snow expected. Total snow accumulations of 1 to 4 inches, with locally higher amounts under localized heavy snow bands. * WHERE...Converse County Lower Elevations and Niobrara County. * WHEN...From midnight tonight to noon MDT Sunday. * IMPACTS...Hazardous travel conditions due to icy or slushy roads and reduced visibilities in moderate to heavy snow. * ADDITIONAL DETAILS...Snow totals are expected to be highly variable due to the banded nature of the snowfall. Conditions may change significantly over very short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ103>105-109>111-113-311200- /O.CON.KCYS.WW.Y.0019.000000T0000Z-240331T1500Z/ North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-Upper North Platte River Basin- Including the cities of Garrett, Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Baggs, Saratoga, and Encampment 308 PM MDT Sat Mar 30 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM MDT SUNDAY... * WHAT...Snow expected. Intermittent snow showers this afternoon will become more widespread after 9PM. Additional snow accumulations of 2 to 6 inches. Higher amounts in excess of 6 inches will be possible under localized heavy snow bands. * WHERE...Much of Carbon and Albany counties including Rawlins, Saratoga, Arlington, Elk Mountain, Shirley Basin, and the North Laramie Range. * WHEN...Until 9 AM MDT Sunday. * IMPACTS...Hazardous travel conditions due to icy, snow packed roads and reduced visibilities in moderate to heavy snow. * ADDITIONAL DETAILS...Snow totals are expected to be highly variable due to the banded nature of the snowfall. Conditions may change significantly over very short distances. 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. && $$
070 WWUS45 KCYS 311440 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 840 AM MDT Sun Mar 31 2024 WYZ103>105-109>111-113-311545- /O.EXP.KCYS.WW.Y.0019.000000T0000Z-240331T1500Z/ North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-Upper North Platte River Basin- Including the cities of Garrett, Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Arlington, Elk Mountain, Baggs, Saratoga, and Encampment 840 AM MDT Sun Mar 31 2024 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 9 AM MDT THIS MORNING... Snow has ended across the area, therefore, the Winter Weather Advisory will be allowed to expire. Scattered snow showers will still be possible throughout the day. $$ WYZ112-114-312245- /O.CON.KCYS.WS.W.0013.000000T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 840 AM MDT Sun Mar 31 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy mountain snow expected. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...Until 6 PM MDT Sunday. * IMPACTS...Dangerous mountain travel due to icy, snow packed roads and significantly reduced visibilities in falling and blowing snow. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ101-102-311800- /O.CON.KCYS.WW.Y.0019.000000T0000Z-240331T1800Z/ Converse County Lower Elevations-Niobrara County- Including the cities of Bill, Douglas, Deer Creek, Glenrock, Lusk, and Redbird 840 AM MDT Sun Mar 31 2024 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Wet snow expected. Total snow accumulations of 1 to 4 inches, with locally higher amounts under localized heavy snow bands. Another round of snow is expected this expected this evening into Monday morning. * WHERE...Converse County Lower Elevations and Niobrara County. * WHEN...From midnight tonight to noon MDT Sunday. * IMPACTS...Hazardous travel conditions due to icy or slushy roads and reduced visibilities in moderate to heavy snow. * ADDITIONAL DETAILS...Snow totals are expected to be highly variable due to the banded nature of the snowfall. Conditions may change significantly over very short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
141 WWUS45 KCYS 311636 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 1036 AM MDT Sun Mar 31 2024 WYZ101-102-311745- /O.CAN.KCYS.WW.Y.0019.000000T0000Z-240331T1800Z/ Converse County Lower Elevations-Niobrara County- Including the cities of Bill, Douglas, Deer Creek, Glenrock, Lusk, and Redbird 1036 AM MDT Sun Mar 31 2024 ...WINTER WEATHER ADVISORY IS CANCELLED... Snow has ended across the area, therefore, the Winter Weather Advisory is cancelled. Scattered rain and snow showers are expected this afternoon with another round of potentially accumulating snow later tonight. $$ WYZ112-114-010000- /O.CON.KCYS.WS.W.0013.000000T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 1036 AM MDT Sun Mar 31 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Mountain snow expected. Additional snow accumulations of 2 to 6 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...Until 6 PM MDT Sunday. * IMPACTS...Dangerous mountain travel due to icy, snow packed roads and significantly reduced visibilities in falling and blowing snow. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
083 WWUS45 KCYS 312015 WSWCYS URGENT - WINTER WEATHER MESSAGE National Weather Service Cheyenne WY 215 PM MDT Sun Mar 31 2024 WYZ112-114-010000- /O.CON.KCYS.WS.W.0013.000000T0000Z-240401T0000Z/ Sierra Madre Range-Snowy Range- Including the cities of Centennial and Albany 215 PM MDT Sun Mar 31 2024 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Mountain snow expected. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 45 mph. * WHERE...Sierra Madre Range and Snowy Range. * WHEN...Until 6 PM MDT Sunday. * IMPACTS...Dangerous mountain travel due to icy, snow packed roads and significantly reduced visibilities in falling and blowing snow. Snow mobilers and hikers may become disoriented or lost due to blowing snow and reduced 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. && $$ WYZ101-102-011200- /O.NEW.KCYS.WW.Y.0020.240401T0000Z-240401T1500Z/ Converse County Lower Elevations-Niobrara County- Including the cities of Bill, Douglas, Deer Creek, Glenrock, Lusk, and Redbird 215 PM MDT Sun Mar 31 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 9 AM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Locally higher amounts up to 6 inches possible. * WHERE...Converse County Lower Elevations and Niobrara County. * WHEN...From 6 PM this evening to 9 AM MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning commute. * ADDITIONAL DETAILS...Precipitation may start off as rain in some locations, before transitioning to snow later this evening. Snow totals may be highly variable based on when precipitation transitions to snow. Conditions may change significantly over very short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ NEZ002-003-095-011200- /O.NEW.KCYS.WW.Y.0020.240401T0300Z-240401T2100Z/ Dawes County-Box Butte County-Northern Sioux County- Including the cities of Chadron, Chadron St Park, Alliance, Hemingford, and Harrison 215 PM MDT Sun Mar 31 2024 ...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 3 PM MDT MONDAY... * WHAT...Snow expected. Total snow accumulations of 2 to 4 inches. Locally higher amounts possible, especially along the Pine Ridge. * WHERE...Dawes County, Box Butte County and Northern Sioux County. * WHEN...From 9 PM this evening to 3 PM MDT Monday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute. * ADDITIONAL DETAILS...Precipitation may start off as rain in some locations, before transitioning to snow later tonight. Snow totals may be highly variable based on when precipitation transitions to snow. Conditions may change significantly over very short distances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this winter storm warning went out at Mar 28, 10:15 PM MDT, 4 hours 43 minutes earlier. Its key messages:
- High Wind Warning for central Carbon County as well as areas near Arlington and Elk Mountain until 6 PM MDT this evening for occasional wind gusts 55 to 60 MPH.
- Snow squalls are possible across Carbon and Albany Counties during the early to mid evening hours today. The heaviest bands could produce snowfall amounts in excess of 3 inches.
- A prolonged period of unsettled weather is expected Friday through Monday with daily chances for rain and snow, but the probability of a high impact winter storm is decreasing.
Area forecast discussion, Mar 28, 10:15 PM MDT, 4 hours 43 minutes before
Area Forecast Discussion National Weather Service Cheyenne WY 1015 PM MDT Thu Mar 28 2024 .KEY MESSAGES... - High Wind Warning for central Carbon County as well as areas near Arlington and Elk Mountain until 6 PM MDT this evening for occasional wind gusts 55 to 60 MPH. - Snow squalls are possible across Carbon and Albany Counties during the early to mid evening hours today. The heaviest bands could produce snowfall amounts in excess of 3 inches. - A prolonged period of unsettled weather is expected Friday through Monday with daily chances for rain and snow, but the probability of a high impact winter storm is decreasing. && .SHORT TERM /THROUGH FRIDAY NIGHT/... Issued at 230 PM MDT Thu Mar 28 2024 Wind gusts 55 to 60 MPH have developed across portions of Carbon County (including both Rawlins and Arlington) this afternoon, in response to strong low-level gradients and deep low-level mixing across the region. Opted for the issuance of a High Wind Warning in an earlier update, which is valid until 6 PM MDT this evening with winds expected to diminish toward sunset. Snow showers will begin to increase in coverage and intensity across western areas by 00z this evening as a cold front blasts eastward across south central and southeast Wyoming. Linear forcing along this frontal zone, coupled with ample instability courtesy of very steep mid- level lapse rates should support a convective precipitation mode through the early to mid evening hours, with linear segments and locally enhanced precipitation rates. Given 700-800 hpa flow at/ above 40 knots, this activity may also be accompanied by locally enhanced wind gust and thus potential for snow squalls. Could be a chance for a couple of lightning strikes as well. The majority of areas should see fairly modest accumulations, but snow squall activity or localized bands could produce a quick 2 to 4 inches, perhaps more over the Snowys & Sierra Madres. After a brief lull on Friday morning, models depict the next wave lifting north and east across the CWA by late Friday afternoon in ahead of a deep/ vigorous upper-level low spinning off the CA coastline. This may support a widespread shield of light to moderate snow across the majority of the CWA w/ the best chance of more substantial snow- fall accumulations over the Snowy and Sierra Madre mountains. We may need to expand current Winter Wx Advisories in both time and space with later updates, as another 6 to 12 inches appears very possible with this next wave. && .LONG TERM /SATURDAY THROUGH THURSDAY/... Issued at 230 PM MDT Thu Mar 28 2024 A messy storm system associated with a closed low dropping south just off the California coast this weekend will lead to several days of unsettled weather. Picking up on Saturday, the low will still be just west of the San Francisco Bay, but moisture laden southwest flow will be stretching out ahead of it, with deep moisture streaming over our area in a strong and broad jet stream aloft. Confluent flow on the eastern edge of this trough will keep a frontal boundary stalled somewhere close to our area through the weekend. Downstream amplification ahead of the trough will help to lift the frontal boundary north through the day on Friday, allowing for fairly strong warm air advection across most of the area. Guidance shows fairly consistent isentropic lift overrunning the frontal boundary, particularly strong when one of a series of vort- maxes traverses overtop the boundary. The stratiform precipitation should lift mostly north of our area during the day Saturday, but as that occurs, showery type precipitation will develop in the narrow warm sector of the storm system. Thus, still have decent PoPs across the area Saturday afternoon and evening even as the frontal boundary shifts north. A vort-max moves to the east late Saturday evening, should allow the frontal boundary to sag southward slightly in its wake. Sunday looks like a fairly similar setup to Saturday, just with the frontal boundary slightly further south. Another round of showery type precipitation should develop in the warm sector, then focused a little further south closer to the I-80 corridor and up to the central portion of the forecast area. Ensemble means show a few hundred J/kg of CAPE across the southern half of the area on Sunday afternoon. Combined with frontogenesis and another round of overrunning, we should see pretty good precipitation coverage Sunday afternoon and evening, with some embedded thunder possible. Sunday evening and overnight looks quite complex, with rapid cold air advection as a surface cyclone over east central Colorado draws the cold front back to the south and ejects to the east. Expect rain to change over to snow rapidly as cold air spills southward. However, the dynamics in the wrap-around flow don't look that favorable for widespread stratiform precipitation. This leaves some considerable uncertainty in the cold phase of this system still, but the vast majority of ensemble members are consolidating around a less-snowy scenario at this time. Still looking at some fairly widespread light accumulations Sunday night into Monday, and could see some advisories being needed. Much colder on Monday with 700-mb temperatures dropping to near -8C for much of the area with brisk northerly winds. This cold snap should be short-lived with a strong ridge pushing in on top of the departing trough as we head into Tuesday. We should warm to near average Tuesday, and then above average Wednesday and Thursday. && .AVIATION /00Z TAFS THROUGH 00Z SATURDAY/... Issued at 1011 PM MDT Thu Mar 28 2024 West southwest flow aloft will prevail, while a cold front sweeps from west to east across the terminals tonight. Wyoming TAFS...At Rawlins, ceilings will range from 3500 to 6000 feet with occasional snow reducing visibilities to 3 miles and ceilings to 2500 feet through 09Z. Winds will gust to 25 knots until 12Z. At Laramie and Cheyenne, ceilings will range from 3500 to 10000 feet, with showers in the vicinity after 00Z. Nebraska TAFS...Ceilings will range from 6000 to 15000 feet. Winds will gust to 25 knots from 15Z to 00Z. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...Winter Weather Advisory until 6 AM MDT Friday for WYZ112. NE...None. && SHORT TERM...CLH LONG TERM...MN AVIATION...RUBIN
Hazardous weather outlook, Mar 28, 4:15 AM MDT, 22 hours 43 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 415 AM MDT Thu Mar 28 2024 NEZ002-003-019>021-054-055-095-096-WYZ102-106>108-113-115-117>119- 291015- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County-Niobrara County- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Upper North Platte River Basin- Laramie Valley-South Laramie Range Foothills- Central Laramie County-East Laramie County- 415 AM MDT Thu Mar 28 2024 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Generally breezy conditions today with warming temperatures. Little to no precipitation expected. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A slow moving weather system will bring an extended period with chances for precipitation from Friday through Monday. Specific details remain uncertain at this time. .Spotter information statement... Spotter activation will not be needed. WYZ112-114-291015- Sierra Madre Range-Snowy Range- 415 AM MDT Thu Mar 28 2024 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...TODAY AND TONIGHT A Winter Weather Advisory is in effect for the Sierra Madre Range. Snow accumulation between 5 and 8 inches possible. 40 mph wind gusts likely, leading to blowing snow reducing visibility in the afternoon hours. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A slow moving weather system will bring an extended period with chances for precipitation from Friday through Monday. Higher snow accumulation expected with the second wave of this system. .Spotter information statement... Spotter activation will not be needed. WYZ101-103>105-109>111-116-291015- Converse County Lower Elevations-North Laramie Range- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-South Laramie Range- 415 AM MDT Thu Mar 28 2024 This hazardous weather outlook is for portions of east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Very breezing conditions today with warmer temperatures. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A slow moving weather system will bring an extended period with chances for precipitation from Friday through Monday. Specific details remain uncertain at this time. .Spotter information statement... Spotter activation will not be needed.
In the hours before
Local storm report, Mar 28, 11:45 PM MDT, 3 hours 13 minutes before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
1145 PM MDT Thu Mar 28 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1253 PM Non-Tstm Wnd Gst 2 NE Rawlins 41.81N 107.20W
03/28/2024 M60 MPH Carbon WY ASOS
Gust 58 mph at 353PM as well.
&&
GCCThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 2:58 AM MDT | Winter Weather Advisory | CYS | Albany, Laramie | 30 hr |
Nearby
Winter Storm Warnings in Wyoming, 2024Every winter storm warning in 2024
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.