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Home Return to list Winter Storm Warning 0013 Issued by the Riverton Forecast Office
Action: New Issued At: 2025-12-08 03:03:11 828 WWUS45 KRIW 080902 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 202 AM MST Mon Dec 8 2025 WYZ001-002-090015- /O.NEW.KRIW.WS.W.0013.251209T0000Z-251211T0000Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Old Faithful, Lake, and Mammoth 202 AM MST Mon Dec 8 2025 ...WINTER STORM WARNING IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 10 and 20 inches, with the highest amounts in the western Absarokas and southwestern Yellowstone Park. Northern Yellowstone Park will see 6 to 10 inches of snow. Winds gusting as high as 60 mph across the ridgetops. * WHERE...Absaroka Mountains and Yellowstone National Park. * WHEN...From 5 PM this afternoon to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-090015- /O.NEW.KRIW.WS.A.0010.251209T1200Z-251211T0000Z/ /O.CON.KRIW.WW.Y.0035.000000T0000Z-251208T1200Z/ Teton and Gros Ventre Mountains- 202 AM MST Mon Dec 8 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON... * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations up to two inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 9 and 18 inches possible. Winds could gust as high as 45 mph. * WHERE...Teton and Gros Ventre Mountains. * WHEN...For the Winter Weather Advisory, until 5 AM MST early this morning. For the Winter Storm Watch, from late tonight through Wednesday afternoon. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-015-024-090015- /O.NEW.KRIW.WS.A.0010.251209T1200Z-251211T0000Z/ Wind River Mountains West-Wind River Mountains East-Salt River and Wyoming Ranges- 202 AM MST Mon Dec 8 2025 ...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 8 to 16 inches possible. Winds could gust as high as 50 mph. * WHERE...Wind River Mountains East, Wind River Mountains West, and Salt River and Wyoming Ranges. * WHEN...From late tonight through Wednesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Hattings Action: Continued Issued At: 2025-12-08 05:36:07 373 WWUS45 KRIW 081135 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 435 AM MST Mon Dec 8 2025 WYZ012-090245- /O.EXP.KRIW.WW.Y.0035.000000T0000Z-251208T1200Z/ /O.CON.KRIW.WS.A.0010.251209T1200Z-251211T0000Z/ Teton and Gros Ventre Mountains- 435 AM MST Mon Dec 8 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON... ...WINTER WEATHER ADVISORY WILL EXPIRE AT 5 AM MST EARLY THIS MORNING... * WHAT...Heavy snow possible. Total snow accumulations between 9 and 18 inches possible. Winds could gust as high as 45 mph. * WHERE...Teton and Gros Ventre Mountains. * WHEN...From late tonight through Wednesday afternoon. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ001-002-090245- /O.CON.KRIW.WS.W.0013.251209T0000Z-251211T0000Z/ Yellowstone National Park-Absaroka Mountains- Including the cities of Old Faithful, Lake, and Mammoth 435 AM MST Mon Dec 8 2025 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 10 and 20 inches, with the highest amounts in the western Absarokas and southwestern Yellowstone Park. Northern Yellowstone Park will see 6 to 10 inches of snow. Winds gusting as high as 60 mph across the ridgetops. * WHERE...Absaroka Mountains and Yellowstone National Park. * WHEN...From 5 PM this afternoon to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-015-024-090245- /O.CON.KRIW.WS.A.0010.251209T1200Z-251211T0000Z/ Wind River Mountains West-Wind River Mountains East-Salt River and Wyoming Ranges- 435 AM MST Mon Dec 8 2025 ...WINTER STORM WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations of 8 to 16 inches possible. Winds could gust as high as 50 mph. * WHERE...Wind River Mountains East, Wind River Mountains West, and Salt River and Wyoming Ranges. * WHEN...From late tonight through Wednesday afternoon. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Hattings | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||