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Home Return to list Winter Storm Watch 0001 Issued by the Riverton Forecast Office
Action: New Issued At: 2026-02-22 12:43:22 311 WWUS45 KRIW 221842 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1142 AM MST Sun Feb 22 2026 WYZ001-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 18 inches over the Pitchstone Plateau of southwest Yellowstone National Park, 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ002-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Absaroka Mountains- 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 16 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. * WHERE...Absaroka Mountains. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Watch is also in effect for the Absaroka Mountains due to stronger wind speeds expected in areas where snowfall will be much less heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ012-024-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 18 inches. Accumulations of 18 to 24 inches possible in the Teton Range. West wind frequently gusting 25 to 35 mph, except gusts up to 45 mph in the Teton Range. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . CNJ Action: New Issued At: 2026-02-22 12:43:22 311 WWUS45 KRIW 221842 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1142 AM MST Sun Feb 22 2026 WYZ001-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 18 inches over the Pitchstone Plateau of southwest Yellowstone National Park, 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ002-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Absaroka Mountains- 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 16 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. * WHERE...Absaroka Mountains. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Watch is also in effect for the Absaroka Mountains due to stronger wind speeds expected in areas where snowfall will be much less heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ012-024-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 18 inches. Accumulations of 18 to 24 inches possible in the Teton Range. West wind frequently gusting 25 to 35 mph, except gusts up to 45 mph in the Teton Range. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . CNJ Action: New Issued At: 2026-02-22 12:43:22 311 WWUS45 KRIW 221842 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1142 AM MST Sun Feb 22 2026 WYZ001-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 18 inches over the Pitchstone Plateau of southwest Yellowstone National Park, 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ002-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Absaroka Mountains- 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 16 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. * WHERE...Absaroka Mountains. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Watch is also in effect for the Absaroka Mountains due to stronger wind speeds expected in areas where snowfall will be much less heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ WYZ012-024-231400- /O.NEW.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1142 AM MST Sun Feb 22 2026 ...WINTER STORM WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH WEDNESDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations 12 to 18 inches. Accumulations of 18 to 24 inches possible in the Teton Range. West wind frequently gusting 25 to 35 mph, except gusts up to 45 mph in the Teton Range. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From late Monday night through Wednesday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation. && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . CNJ Action: Upgraded Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. 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 . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. 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 . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Upgraded Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry 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 . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. 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 . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL Action: Upgraded Issued At: 2026-02-23 02:13:14 706 WWUS45 KRIW 230812 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 112 AM MST Mon Feb 23 2026 WYZ001-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Yellowstone National Park- Including the cities of Mammoth, Lake, and Old Faithful 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 12 to 20 inches over the Pitchstone Plateau of southwest Yellowstone National Park. Locally higher amounts over 2 feet will be possible. 6 to 12 inches in central portions of Yellowstone, and between 1 and 4 inches in Lamar Valley and Mammoth. West wind 15 to 30 mph. * WHERE...Yellowstone National Park. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Backcountry travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ002-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Absaroka Mountains- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow possible. Total snow accumulations 15 to 25 inches over the western half of the Absaroka Range, with 4 to 10 inches over the eastern half. West wind frequently gusting 35 to 45 mph. West winds gusting 60 to 70 mph will occur Wednesday, with the stronger gusts occurring on the east side of the range. * WHERE...Absaroka Mountains. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...A High Wind Warning is also in effect for the Absaroka Mountains through Tuesday morning due to stronger wind speeds expected in areas where snowfall will be not as heavy. 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 . && $$ WYZ012-024-232315- /O.UPG.KRIW.WS.A.0001.260224T1200Z-260225T1800Z/ /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow. Total snow accumulations 16 to 24 inches. Locally higher amounts up to 3 feet possible in the Tetons. West wind frequently gusting 25 to 35 mph Tuesday, increasing to 35 to 45 mph Wednesday. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. * ADDITIONAL DETAILS...Snowfall totals toward the southern half of the Salt River Range will range from 4 to 10 inches. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ014-232315- /O.NEW.KRIW.WS.W.0002.260224T1200Z-260226T0000Z/ Wind River Mountains West- 112 AM MST Mon Feb 23 2026 ...WINTER STORM WARNING IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Heavy snow expected. Total snow accumulations between 12 and 18 inches over the northern half of the range. 1 to 2 inches possible over South Pass Tuesday night into Wednesday morning. Winds gusting as high as 50 mph over South Pass Tuesday, increasing to 60 mph on Wednesday. * WHERE...Wind River Mountains West. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult over South Pass. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes. 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 . && $$ WYZ013-232315- /O.NEW.KRIW.WW.Y.0009.260224T1200Z-260226T0000Z/ Jackson Hole- Including the cities of Jackson 112 AM MST Mon Feb 23 2026 ...WINTER WEATHER ADVISORY IN EFFECT FROM 5 AM TUESDAY TO 5 PM MST WEDNESDAY... * WHAT...Snow expected. Total snow accumulations between 3 and 8 inches. Winds gusting as high as 45 mph. * WHERE...Jackson Hole. * WHEN...From 5 AM Tuesday to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday morning and evening commutes. * ADDITIONAL DETAILS...Precipitation will begin as snow Tuesday morning, but is expected to change over to rain by the afternoon and last through much of the night Tuesday night. Rain will then change back over to snow Wednesday morning. If precipitation rates are higher, snowfall totals will be higher. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||