Alert archive / Wyoming / Blizzard Warnings in 2023
Blizzard Warning 2, NWS Riverton, WY
NWS Riverton, WY issued this blizzard warning at Apr 3, 2023, 2:43 PM MDT for Fremont County, Natrona County, Sweetwater County, Wyoming. It was in force for 27 hr. 1 report 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
- Apr 3, 2023, 2:43 PM MDT (20:43 UTC)
- Expired
- Apr 4, 2023, 6:00 PM MDT
- In force
- 27 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Natrona County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 65 km from the middle of the area, began a volume at 20:47 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 |
|---|---|---|---|
| Apr 4, 11:00 AM MDT | SNOW 10.5 | 4 Wnw Riverton, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 8.7 hours before the alert went out and 62 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
- 771 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- -98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
616 WWUS45 KRIW 032043 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 243 PM MDT Mon Apr 3 2023 WYZ019-041200- /O.UPG.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ /O.NEW.KRIW.BZ.W.0002.230403T2043Z-230405T0000Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 243 PM MDT Mon Apr 3 2023 ...BLIZZARD WARNING IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Blizzard conditions. Additional snow accumulations of 12 to 24 inches. Winds gusting as high as 70 mph. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-041200- /O.UPG.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ /O.NEW.KRIW.BZ.W.0002.230403T2043Z-230405T0000Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 243 PM MDT Mon Apr 3 2023 ...BLIZZARD WARNING IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Blizzard conditions. Additional snow accumulations of 15 to 20 inches, with higher amounts on Casper Mountain. Winds gusting as high as 65 mph. * WHERE...Natrona County Lower Elevations and Casper Mountain. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ024-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Salt River and Wyoming Ranges- 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 6 to 12 inches. * WHERE...Salt River and Wyoming Ranges. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult at times, especially over Salt River Pass at times. * ADDITIONAL DETAILS...Please monitor the Bridger-Teton Avalanche Center at bridger teton avalanche center.org, if your plans include travel into the backcountry. 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. && $$ WYZ028>030-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Rock Springs and Green River-Flaming Gorge-East Sweetwater County- Including the cities of Rock Springs, Green River, and Wamsutter 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 8 to 12 inches. Winds gusting as high as 50 mph. * WHERE...Rock Springs and Green River, Flaming Gorge and East Sweetwater County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible, especially during the morning commutes. The combination of snow and wind could create localized white-out conditions at times. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ017-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Basin- Including the cities of Riverton and Shoshoni 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 10 to 14 inches. Winds gusting as high as 50 mph. * WHERE...Wind River Basin. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult, especially tonight and Tuesday morning. The combination of snow and wind could create white-out conditions at times especially over the northern portions of the Basin. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. 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. && $$ WYZ009>011-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County- Including the cities of Buffalo and Kaycee 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 6 to 12 inches for lower elevations and 12 to 18 inches for mountains. Winds gusting as high as 60 mph. * WHERE...Bighorn Mountains Southeast, Northeast Johnson County and Southeast Johnson County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult tonight and Tuesday morning. Blowing snow could significantly reduce visibility. * ADDITIONAL DETAILS...While snow may begin across far southern Johnson County this afternoon, the heaviest snow and strongest wind are expected from this evening through midday Tuesday. The heaviest snow is likely to fall in the southern Bighorn Range over far southern Johnson County near the Natrona County line. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ015-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains East- 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 18 to 24 inches. Winds gusting as high as 60 mph. * WHERE...Wind River Mountains East. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel will become impossible over South Pass later this afternoon into this evening. Highway 28...including South Pass will likely have a prolonged road closure. * ADDITIONAL DETAILS...The northern portion of the range including Union Pass should only receive 5 to 10 inches of snow. 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. && $$ WYZ005-007-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Southwest Big Horn Basin-Owl Creek and Bridger Mountains- Including the city of Thermopolis 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches in the lower elevations and 8 to 12 inches in the mountains. Winds gusting as high as 60 mph. * WHERE...Southwest Big Horn Basin and Owl Creek and Bridger Mountains. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could become difficult tonight and Tuesday morning. Blowing snow could significantly reduce visibility especially in the mountains. * ADDITIONAL DETAILS...Accumulations will likely be light this afternoon, but will increase after sunset. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ018-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Lander Foothills- Including the city of Lander 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 12 to 18 inches. Winds gusting as high as 45 mph. * WHERE...Lander Foothills. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult especially for the Tuesday morning commute. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. 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. && $$ WYZ026-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 6 inches. Winds gusting as high as 50 mph. * WHERE...Upper Green River Basin. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult at times. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ027-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. * WHERE...South Lincoln County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult at times. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. 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. && $$ WYZ014-041200- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains West- 243 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. Winds gusting as high as 70 mph. * WHERE...Wind River Mountains West. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel over South Pass will become impossible later this afternoon and evening. A prolonged road closure of Highway 28 including South Pass is likely. * ADDITIONAL DETAILS...The strong winds will result in considerable blowing and drifting of snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ023-041200- /O.CON.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 243 PM MDT Mon Apr 3 2023 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Snow. Additional snow accumulations of 4 to 6 inches. * WHERE...Star Valley. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Slick and hazardous travel expected. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. 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. && $$ WYZ016-041200- /O.CON.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Upper Wind River Basin- Including the city of Dubois 243 PM MDT Mon Apr 3 2023 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Snow. Additional snow accumulations of 2 to 11 inches. Winds gusting as high as 45 mph. * WHERE...Upper Wind River Basin. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult, but become very difficult the farther southeast your travel in the Wind River Basin. * ADDITIONAL DETAILS...Snow may melt during the afternoon, especially on paved surfaces, which could lead to a combination of wet and slick roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/riw
4 follow-up statements
137 WWUS45 KRIW 040409 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1009 PM MDT Mon Apr 3 2023 WYZ020-022-041300- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 1009 PM MDT Mon Apr 3 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Blizzard conditions. Total snow accumulation of 24 to 30 inches by Tuesday afternoon. Total snow accumulation of 30 to 40 inches for Casper Mountain. Winds gusting 40 to 50 mph. * WHERE...Natrona County Lower Elevations and Casper Mountain. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ019-041300- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 1009 PM MDT Mon Apr 3 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Blizzard conditions. Total snow accumulation of 20 to 30 inches by Tuesday afternoon. Winds gusting 45 to 55 mph, with gusts up to 65 mph in the mountains. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible. Widespread blowing snow will significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ024-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Salt River and Wyoming Ranges- 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. * WHERE...Salt River and Wyoming Ranges. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult at times, especially over Salt River Pass at times. * ADDITIONAL DETAILS...Please monitor the Bridger-Teton Avalanche Center at bridger teton avalanche center.org, if your plans include travel into the backcountry. 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. && $$ WYZ028>030-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Rock Springs and Green River-Flaming Gorge-East Sweetwater County- Including the cities of Rock Springs, Green River, and Wamsutter 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. Winds gusting as high as 45 mph. * WHERE...Rock Springs and Green River, Flaming Gorge and East Sweetwater County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible, especially during the morning commute. The combination of snow and wind could create localized white-out conditions at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ017-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Basin- Including the cities of Riverton and Shoshoni 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Total snow accumulations of 8 to 14 inches from Riverton to Hudson. Total snow accumulation of 3 to 6 inches near Shoshoni. Wind gusting 30 to 40 mph. * WHERE...Wind River Basin. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult, especially tonight and Tuesday morning. The combination of snow and wind could create white-out conditions at times. 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. && $$ WYZ009>011-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County- Including the cities of Buffalo and Kaycee 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Total snow accumulations of 12 to 20 inches for lower elevations and 15 to 25 inches for mountains through Tuesday afternoon. Winds gusting 30 to 40 mph, with gusts over 50 mph in the mountains. * WHERE...Bighorn Mountains Southeast, Northeast Johnson County and Southeast Johnson County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult tonight and Tuesday morning. Blowing snow could significantly reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ015-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains East- 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Total snow accumulations of 20 to 30 inches. Winds gusting as high as 50 mph. * WHERE...Wind River Mountains East. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel over South Pass may be impossible. * ADDITIONAL DETAILS...The northern portion of the range including Union Pass should only receive 5 to 10 total inches of snow. 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. && $$ WYZ005-007-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Southwest Big Horn Basin-Owl Creek and Bridger Mountains- Including the city of Thermopolis 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Total snow accumulations of 4 to 8 inches in the lower elevations and 10 to 20 inches in the mountains. Winds gusting as high as 50 mph. * WHERE...Southwest Big Horn Basin and Owl Creek and Bridger Mountains. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could become difficult tonight and Tuesday morning. Blowing snow could significantly reduce visibility especially in the mountains. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ018-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Lander Foothills- Including the city of Lander 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Total snow accumulation of 12 to 18 inches. Winds gusting as high as 35 mph. * WHERE...Lander Foothills. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult, especially for the Tuesday morning 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. && $$ WYZ026-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Total snow accumulations of 4 to 6 inches. * WHERE...Upper Green River Basin. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ027-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. * WHERE...South Lincoln County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult at times. 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. && $$ WYZ014-041300- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains West- 1009 PM MDT Mon Apr 3 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Heavy snow. Additional snow accumulations of 4 to 8 inches. Additional snow accumulations of 10 to 15 inches near Atlantic City. Winds gusting as high as 65 mph. * WHERE...Wind River Mountains West. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel will be very difficult to impossible along Highway 28. * ADDITIONAL DETAILS...The strong winds will result in considerable blowing and drifting of snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ023-041300- /O.CON.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 1009 PM MDT Mon Apr 3 2023 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Snow. Additional snow accumulations of 2 to 4 inches. * WHERE...Star Valley. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Slick and hazardous travel expected. 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. && $$ WYZ016-041300- /O.CON.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Upper Wind River Basin- Including the city of Dubois 1009 PM MDT Mon Apr 3 2023 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT TUESDAY... * WHAT...Snow. Additional snow accumulations of 2 to 4 inches. Winds gusting 20 to 30 mph. * WHERE...Upper Wind River Basin. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/riw
514 WWUS45 KRIW 040934 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 334 AM MDT Tue Apr 4 2023 WYZ024-026-041045- /O.CAN.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Salt River and Wyoming Ranges-Upper Green River Basin- Including the cities of La Barge, Big Piney, and Farson 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING IS CANCELLED... Light snow will continue today, but additional snowfall amounts are expected to generally be 2 to 4 inches in the mountains, and an inch or less in the lower elevations. Also winds will generally be light. $$ WYZ023-041045- /O.CAN.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Star Valley- Including the cities of Afton, Alpine, Star Valley Ranch, and Thayne 334 AM MDT Tue Apr 4 2023 ...WINTER WEATHER ADVISORY IS CANCELLED... Periods of light snow will occur in Star Valley today. Additional snowfall between 1 and 2 inches could occur. Winds will generally be light, and temperatures should be warm enough that roads should become generally wet in the afternoon. $$ WYZ030-050000- /O.UPG.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ /O.EXA.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ East Sweetwater County- Including the city of Wamsutter 334 AM MDT Tue Apr 4 2023 ...BLIZZARD WARNING IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Blizzard conditions with significant blowing and drifting of snow. Additional snow accumulations of 2 to 4 inches. Northeast winds between 25 and 35 mph, with gusts to around 45 mph expected this morning, decreasing gradually in the afternoon. * WHERE...East Sweetwater County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be impossible, especially during the morning commute. Flight delays and possibly cancellations are possible. Interstate 80 will likely be closed across eastern Sweetwater County for a prolonged period. * ADDITIONAL DETAILS...Only travel in emergencies. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ020-022-050000- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 334 AM MDT Tue Apr 4 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Blizzard conditions with significant blowing and drifting of snow. Snow drifts will be several feet high. Additional snow accumulations of 2 to 5 inches in the lower elevations, and 8 to 12 inches on Casper Mountain. Northeast winds between 15 and 25 mph with gusts to 35 mph will occur today. * WHERE...Natrona County Lower Elevations and Casper Mountain. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel will be impossible in rural areas, and difficult in Casper. Stay home if possible, especially this morning. Prolonged road closures are expected. * ADDITIONAL DETAILS...White-out conditions will occur in rural areas. Flight delays and possible cancellations could occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ019-050000- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 334 AM MDT Tue Apr 4 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Blizzard conditions with significant blowing and drifting of snow. Snow drifts will be several feet high. Additional snow accumulations of 4 to 8 inches. Northeast winds between 20 and 30 mph with gusts to 45 mph will occur today. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel will be impossible. Highways in southeast Fremont County could be closed for a couple of days. * ADDITIONAL DETAILS...White-out conditions will occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ017-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Basin- Including the cities of Riverton and Shoshoni 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow, moderate at times. Additional snow accumulations of 2 to 5 inches with the highest amounts toward the Lander Foothills. Areas of blowing and drifting snow will also occur with winds 15 to 25 mph with gusts 30 to 40 mph. * WHERE...Wind River Basin including Hudson, Pavillion, Riverton and Shoshoni. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult, especially this morning. * ADDITIONAL DETAILS...In heavier snow bursts and blowing snow, visibility will be reduced to a quarter mile. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ009>011-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County- Including the cities of Buffalo and Kaycee 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow, moderate at times. Additional snow accumulations of 3 to 6 inches. Blowing and drifting of snow will also occur with northerly winds between 25 and 35 mph with gusts between 40 and 50 mph. * WHERE...Bighorn Mountains Southeast, and Johnson County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult today with visibilities down at times below a quarter mile. 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. && $$ WYZ015-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains East- 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of 8 to 12 inches over central and southern areas of the eastern slopes of the Wind River Mountains including South Pass. Only 2 to 4 inches over the north including Union Pass. Northeast winds between 20 and 30 mph with gusts around 45 mph decreasing in the afternoon. * WHERE...Wind River Mountains East. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel over South Pass will be impossible today. Highway 28 over South Pass could be closed for a couple of days. * ADDITIONAL DETAILS...Significant blowing and drifting of snow with drifts of several feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ005-007-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Southwest Big Horn Basin-Owl Creek and Bridger Mountains- Including the city of Thermopolis 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow, mainly light. Additional snow accumulations of 1 to 2 inches in the lower elevations, and 4 to 8 inches in the mountains. Winds gusting as high as 45 mph in the mountains. * WHERE...Southwest Big Horn Basin and Owl Creek and Bridger Mountains. This includes Thermopolis and the Wind River Canyon. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Roads will be slick and hazardous in spots, mainly this 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. && $$ WYZ018-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Lander Foothills- Including the city of Lander 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow, moderate at times. Additional snow accumulations of 3 to 6 inches. * WHERE...Lander Foothills. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel will be difficult this morning. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ027-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow, briefly moderate. Additional snow accumulations of 2 to 4 inches. * WHERE...South Lincoln County. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be difficult at times, mainly this 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. && $$ WYZ014-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains West- 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow. Additional snow accumulations of 2 to 4 inches above 9000 feet. Strong northeast winds between 30 and 40 mph with gusts 55 to 65 mph will weak considerable by noon. * WHERE...Wind River Mountains West. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel will be impossible along Highway 28 especially the farther east. Highway 28 over South Pass could be closed for a couple of days. * ADDITIONAL DETAILS...The strong winds will result in considerable blowing and drifting of snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ028-029-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 334 AM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of snow with areas of blowing and drifting of snow. Additional snow accumulations of 2 to 4 inches. Winds gusting as high as 40 mph. * WHERE...Western third of Sweetwater County including Rock Springs and Green River. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Travel could be very difficult, especially during the morning 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. && $$ WYZ016-050000- /O.CON.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Upper Wind River Basin- Including the city of Dubois 334 AM MDT Tue Apr 4 2023 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Periods of Snow, mainly light. Additional snow accumulations of 1 to 2 inches. * WHERE...Upper Wind River Basin including Dubois and Crowheart. The heaviest snow will be around Crowheart. * WHEN...Until 6 PM MDT Tuesday. * IMPACTS...Roads will be slick and hazardous in spots, but become difficult especially this morning southeast of Crowheart. * ADDITIONAL DETAILS...Snow will likely melt on paved surfaces by midday. This will result in roads becoming wet by around midday. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Team Riverton/21
466 WWUS45 KRIW 042047 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 247 PM MDT Tue Apr 4 2023 WYZ020-022-050000- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 247 PM MDT Tue Apr 4 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Blizzard conditions. with significant blowing and drifting of snow. Snow drifts will be several feet high. Additional snow accumulations of 1 to 3 inches with locally higher amounts on Casper Mountain. Winds gusting as high as 20 to 30 mph. * WHERE...Natrona County Lower Elevations and Casper Mountain. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be impossible in rural areas, and difficult in Casper. Stay home if possible. Prolonged road closures are expected. * ADDITIONAL DETAILS...White-out conditions will occur in rural areas. Flight delays and possible cancellations could occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ019-050000- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 247 PM MDT Tue Apr 4 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Blizzard conditions with significant blowing and drifting of snow. Snow drifts will be several feet high. Additional snow accumulations of 1 to 2 inches. Winds gusting as high as 40 to 50 mph. * WHERE...Green Mountains and Rattlesnake Range. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be impossible. * ADDITIONAL DETAILS...White-out conditions will occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ030-050000- /O.CON.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ East Sweetwater County- Including the city of Wamsutter 247 PM MDT Tue Apr 4 2023 ...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Blizzard conditions with significant blowing and drifting of snow. Additional snow accumulations of up to one inch. Winds gusting as high as 40 to 55 mph through the afternoon. * WHERE...East Sweetwater County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be difficult to impossible. Prolonged road closures are expected. * ADDITIONAL DETAILS...Only travel in emergencies. PRECAUTIONARY/PREPAREDNESS ACTIONS... Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ017-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Basin- Including the cities of Riverton and Shoshoni 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations of up to one inch. Winds gusting as high as 30 to 40 mph this afternoon. * WHERE...Wind River Basin including Hudson, Pavillion, Riverton and Shoshoni. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be difficult. * ADDITIONAL DETAILS...In heavier snow bursts and blowing snow, visibility will be reduced to a quarter mile. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ009>011-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County- Including the cities of Buffalo and Kaycee 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches. Winds gusting as high as 35 to 45 mph. * WHERE...Bighorn Mountains Southeast, and Johnson County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult today with visibilities down at times below a quarter mile. 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. && $$ WYZ015-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains East- 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow. Additional snow accumulations of 1 to 2 inches. Winds gusting 25 to 35 mph. * WHERE...Wind River Mountains East. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel over South Pass will be impossible today. Prolonged road closures are expected. * ADDITIONAL DETAILS...Significant blowing and drifting of snow with drifts of several feet. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ005-007-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Southwest Big Horn Basin-Owl Creek and Bridger Mountains- Including the city of Thermopolis 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations of around 1 inch. Winds gusting 35 to 45 mph. * WHERE...Southwest Big Horn Basin and Owl Creek and Bridger Mountains. This includes Thermopolis and the Wind River Canyon. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads will be slick and hazardous in spots. 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. && $$ WYZ018-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Lander Foothills- Including the city of Lander 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations of 1 to 2 inches. * WHERE...Lander Foothills. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be difficult at times. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ027-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Heavy snow. Additional snow accumulations of up to one inch. * WHERE...South Lincoln County. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be difficult at times. 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. && $$ WYZ014-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains West- 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow. Additional snow accumulations of up to one inch. Winds gusting as high as 25 to 35 mph. * WHERE...Wind River Mountains West. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel will be impossible along Highway 28. Prolonged road closures are expected. * ADDITIONAL DETAILS...The strong winds will result in considerable blowing and drifting of snow. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ WYZ028-029-050000- /O.CON.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 247 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow and blowing snow. Additional snow accumulations of up to one inch. Winds gusting as high as 30 to 40 mph this afternoon. * WHERE...Western third of Sweetwater County including Rock Springs and Green River. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Travel could be very difficult. Significant blowing and drifting of snow is expected. Prolonged road closures are expected. 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. && $$ WYZ016-050000- /O.CON.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Upper Wind River Basin- Including the city of Dubois 247 PM MDT Tue Apr 4 2023 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING... * WHAT...Snow. Additional snow accumulations of up to one inch. * WHERE...Upper Wind River Basin including Dubois and Crowheart. The heaviest snow will be around Crowheart. * WHEN...Until 6 PM MDT this evening. * IMPACTS...Roads will be slick and hazardous in spots, especially southeast of Crowheart. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/riw
538 WWUS45 KRIW 042351 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 551 PM MDT Tue Apr 4 2023 WYZ020-022-050100- /O.EXP.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Natrona County Lower Elevations-Casper Mountain- Including the city of Casper 551 PM MDT Tue Apr 4 2023 ...BLIZZARD WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow and wind will continue to decrease this evening. Thus, the Blizzard Warning will expire at 6 PM. $$ WYZ019-050100- /O.EXP.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ Green Mountains and Rattlesnake Range- Including the city of Jeffrey City 551 PM MDT Tue Apr 4 2023 ...BLIZZARD WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow and wind will continue to decrease this evening. Thus, the Blizzard Warning will expire at 6 PM. $$ WYZ030-050100- /O.EXP.KRIW.BZ.W.0002.000000T0000Z-230405T0000Z/ East Sweetwater County- Including the city of Wamsutter 551 PM MDT Tue Apr 4 2023 ...BLIZZARD WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow and wind will continue to decrease this evening. Thus, the Blizzard Warning will expire at 6 PM. $$ WYZ017-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Basin- Including the cities of Riverton and Shoshoni 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ009>011-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County- Including the cities of Buffalo and Kaycee 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ015-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains East- 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ005-007-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Southwest Big Horn Basin-Owl Creek and Bridger Mountains- Including the city of Thermopolis 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ018-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Lander Foothills- Including the city of Lander 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ027-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ South Lincoln County- Including the cities of Kemmerer and Cokeville 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ014-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Wind River Mountains West- 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ028-029-050100- /O.EXP.KRIW.WS.W.0010.000000T0000Z-230405T0000Z/ Rock Springs and Green River-Flaming Gorge- Including the cities of Rock Springs and Green River 551 PM MDT Tue Apr 4 2023 ...WINTER STORM WARNING WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Storm Warning will expire at 6 PM. $$ WYZ016-050100- /O.EXP.KRIW.WW.Y.0025.000000T0000Z-230405T0000Z/ Upper Wind River Basin- Including the city of Dubois 551 PM MDT Tue Apr 4 2023 ...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM MDT THIS EVENING... Snow will continue to decrease this evening. Thus, the Winter Weather Advisory will expire at 6 PM.. $$ For more information from the National Weather Service visit https://weather.gov/riw
What forecasters said that day
The local office's own words before this blizzard warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before this blizzard warning went out at Apr 3, 2:32 PM MDT, 11 minutes earlier.
Area forecast discussion, Apr 3, 2:32 PM MDT, 11 minutes before
Area Forecast Discussion National Weather Service Riverton WY 232 PM MDT Mon Apr 3 2023 .DISCUSSION...(This evening through Monday) Issued at 157 PM MDT Mon Apr 3 2023 Quoting the cast of White Christmas: "snow, Snow, SNOW, SNOOOW!". Too bad it's almost Easter... The broad midlevel trough continues to dive southeast into the Great Basin, pumping ample moisture into the state. This is also inducing sfc low pressure development in northern Colorado, which is wrapping easterly flow back around underneath the moisture plume. This has brought a well-defined area of snowfall across central Wyoming today, with snowfall observations already reaching 10 inches at Casper through noon today. The trough will gradually shift east during the night tonight, right along the WY/CO border. As the system slowly moves east, the isentropic lift will continue, even increase across central Wyoming. Noting from the morning sounding showed somewhat drier air near the sfc, and observations from Casper noted a finer powdery snow, snow ratios have been above 12 to 1. Putting these together, have pushed snowfall totals higher mainly for Natrona and portions of Fremont County. The other complicating factor is the increasing east winds tonight. With the sfc low deepening tonight, forecast gradient has tightened even further, so the wind forecast has been increased for tonight and tomorrow morning. This has necessitated upgrading the Winter Storm Warnings for Natrona and southeast Fremont Counties up to a Blizzard Warning. Peak wind gusts of 50 to 60 mph are more likely from northern Natrona southwest toward Jeffrey City. Strong winds will also extend well into Fremont and Sweetwater, so travel conditions will deteriorate significantly for both the I-25 and I-80 corridors tonight. As the sfc low moves east into Nebraska, winds will shift more from the north Tuesday morning. While this will gradually decrease the forcing needed for snow production, gusty winds from another direction will continue to exacerbate the near white-out conditions across central and southern Wyoming through the morning hours. As the sfc low ejects into the Northern Plains, snowfall will end quickly across the state, with only light snow possible for the western mountains into the day Wednesday. The northerly flow will reinforce the abnormally cold temperatures across the area, especially areas is fresh snowfall. The good news is that models are still optimistic in building a ridge across the Rockies behind this system, both deflecting the active pattern into Canada, and allowing temperatures to moderate quickly late week into the weekend. Temperatures mostly in the 40s and 50s will be a refreshing change for the Easter weekend. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) Issued at 1157 AM MDT Mon Apr 3 2023 A significant Winter Storm will continue to impact the region through the TAF period. Prevailing IFR/LIFR conditions will continue at most south central and central WY terminals including KCPR, KLND, KRIW, and KRKS through the TAF period. These conditions are a result of moderate to heavy snow and gusty winds with gusts of 30 to 40kts possible, which will lead to blowing snow and vsby may be reduced to 1/4SM or less at times, particularly at KCPR and KRKS. KCOD and KWRL terminals will see mainly VFR/MVFR through 03Z this evening, when conditions will deteriorate to IFR as snow begins to move into those terminals. A cold front will also bring gusty north winds to KCOD and KWRL terminals around that same time with gusts 30 to 35kts expected through the rest of the TAF period. These winds will lead to blowing snow and could further reduce vsby to LIFR at times, especially during the overnight period. For west of the Divide Terminals, KBPI, KJAC, and KPNA, snow will be more showery in nature and a prevailing period of IFR conditions is not expected for any of the three terminals. However, brief periods of IFR conditions could occur with periods of more intense snow showers. This afternoon through 06Z tonight, is the most likely timeframe for any IFR conditions to occur at these terminals. Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for the latest information on icing and turbulence forecasts. && .FIRE WEATHER... Issued at 157 PM MDT Mon Apr 3 2023 Near-blizzard conditions will be possible in zones 280/289/300 Monday night. Snow and winds will gradually subside by Tuesday evening. Light snow may continue for the western mountains into the day Wednesday, but accumulations will be minimal. Drier conditions will trend toward the latter half of the week into next weekend, with milder, almost normal temperatures returning. && .RIW WATCHES/WARNINGS/ADVISORIES... Winter Storm Warning until 6 PM MDT Tuesday for WYZ005-007- 009>011-014-015-017-018-024-026>030. Winter Weather Advisory until 6 PM MDT Tuesday for WYZ016-023. Blizzard Warning until 6 PM MDT Tuesday for WYZ019-020-022. && DISCUSSION...Straub AVIATION...Hensley FIRE WEATHER...Straub
Hazardous weather outlook, Apr 3, 3:55 AM MDT, 10 hours 48 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 355 AM MDT Mon Apr 3 2023 WYZ001>020-022>030-041400- Yellowstone National Park-Absaroka Mountains-Cody Foothills- North Big Horn Basin-Southwest Big Horn Basin- Southeast Big Horn Basin-Owl Creek and Bridger Mountains- Bighorn Mountains West-Bighorn Mountains Southeast- Northeast Johnson County-Southeast Johnson County- Teton and Gros Ventre Mountains-Jackson Hole- Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Wind River Basin-Lander Foothills- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations-Casper Mountain-Star Valley- Salt River and Wyoming Ranges-Upper Green River Basin Foothills- Upper Green River Basin-South Lincoln County- Rock Springs and Green River-Flaming Gorge-East Sweetwater County- 355 AM MDT Mon Apr 3 2023 ...Multiple Winter Weather Highlights Remain in Effect... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and Tonight. Snow increases across central and southern Wyoming today. Snow rates increase this afternoon and into the overnight hours. Winds will also increase today. White-out conditions likely at times this afternoon and overnight. Please see the winter weather highlights for additional details. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Tuesday...Snow and wind continues through the first half of the day. Snow and wind decreases by evening. Unseasonably cold. Wednesday and Thursday...High temperatures 15 to 25 degrees below normal. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to standard operating procedures.
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 3:50 AM MDT | Winter Weather Advisory | RIW | Fremont, Lincoln | 38 hr |
Nearby
Blizzard Warnings in Wyoming, 2023Every blizzard warning in 2023
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.