WWUS45 KRIW 180716 WSWRIW URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1216 AM MST Tue Feb 18 2025 WYZ001-182230- /O.CON.KRIW.WS.W.0006.000000T0000Z-250219T0600Z/ Yellowstone National Park- Including the cities of Lake, Mammoth, and Old Faithful 1216 AM MST Tue Feb 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow expected. Additional snow accumulations between 3 and 6 inches in southern and eastern portions of the Park with 6 to 12 additional inches of additional snow accumulation possible in the Pitchstone Plateau. 1 to 3 additional inches elsewhere. * WHERE...Yellowstone National Park. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel will be difficult, especially in the backcountry. 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 . && $$ WYZ002-182230- /O.CON.KRIW.WS.W.0006.000000T0000Z-250219T0600Z/ Absaroka Mountains- 1216 AM MST Tue Feb 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow expected. Additional snow accumulations between 4 and 8 inches across western portions of the Absaroka Mountains. Elsewhere, additional snow accumulations of 2 to 5 inches. * WHERE...Absaroka Mountains. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be very difficult. PRECAUTIONARY/PREPAREDNESS ACTIONS... If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ012-024-182230- /O.CON.KRIW.WS.W.0006.000000T0000Z-250219T0600Z/ Teton and Gros Ventre Mountains-Salt River and Wyoming Ranges- 1216 AM MST Tue Feb 18 2025 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... * WHAT...Heavy snow expected. Additional snow accumulations between 6 and 12 in the Tetons; 4 to 8 inches in the Salt and Wyoming Range. * WHERE...Teton and Gros Ventre Mountains and Salt River and Wyoming Ranges. * WHEN...Until 11 PM MST this evening. * IMPACTS...Travel could be difficult. The hazardous conditions could impact the Tuesday morning and evening 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 . && $$ WYZ010-182230- /O.EXB.KRIW.WW.Y.0010.250218T0716Z-250220T0000Z/ Northeast Johnson County- Including the cities of Buffalo 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 PM MST WEDNESDAY... * WHAT...Snow. Additional snow accumulations of 1 to 3 inches, most falling before noon * WHERE...Northeast Johnson County. * WHEN...Until 5 PM MST Wednesday. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ004-182230- /O.CON.KRIW.WW.Y.0010.000000T0000Z-250219T0000Z/ North Bighorn Basin- Including the cities of Lovell, Basin, Greybull, Powell, and Shell 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Total snow accumulations of 3 to 6 inches along and east of a line from Frannie to Burlington. Locally higher amounts up to a foot possible where snow bands set up. Generally 1 to 2 inches elsewhere. * WHERE...North Bighorn Basin. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. 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 . && $$ WYZ008-182230- /O.CON.KRIW.WW.Y.0010.000000T0000Z-250219T0000Z/ Bighorn Mountains West- 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Additional snow accumulations of 3 to 6 inches north of Highway 16; 21 to 4 inches south of Highway 16. * WHERE...Bighorn Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be very difficult, including over Granite Pass and Powder River Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ013-023-181200- /O.CON.KRIW.WW.Y.0010.000000T0000Z-250218T1200Z/ Jackson Hole-Star Valley- Including the cities of Thayne, Alpine, Afton, Star Valley Ranch, and Jackson 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... * WHAT...Snow expected. Additional snow accumulations between 1 and 2 inches. * WHERE...Jackson Hole and Star Valley. * WHEN...Until 5 AM MST early this morning. * IMPACTS...Plan on slippery road conditions. 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 . && $$ WYZ014-182230- /O.CON.KRIW.WW.Y.0010.000000T0000Z-250219T0000Z/ Wind River Mountains West- 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... * WHAT...Snow. Additional snow accumulations between 3 and 6 inches. Additional accumulations between 1 and 3 inches along Highway 28 over South Pass. Winds gusting as high as 40 mph. * WHERE...Wind River Mountains West. * WHEN...Until 5 PM MST this afternoon. * IMPACTS...Travel could be difficult, including over South Pass. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ WYZ025-181200- /O.CON.KRIW.WW.Y.0010.000000T0000Z-250218T1200Z/ Upper Green River Basin Foothills- Including the cities of Pinedale 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST EARLY THIS MORNING... * WHAT...Snow expected. Additional snow accumulations between 1 and 3 inches northwest of Cora, including the Bondurant area. Elsewhere, additional accumulations up to an inch. * WHERE...Upper Green River Basin Foothills. * WHEN...Until 5 AM MST early this morning. * IMPACTS...Plan on slippery road conditions. 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 . && $$ WYZ003-005-006-182230- /O.CON.KRIW.WW.Y.0010.250218T1200Z-250219T0000Z/ Cody Foothills-Southwest Bighorn Basin-Southeast Bighorn Basin- Including the cities of Ten Sleep, Worland, Thermopolis, Meeteetse, Cody, and Clark 1216 AM MST Tue Feb 18 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 AM EARLY THIS MORNING TO 5 PM MST THIS AFTERNOON... * WHAT...Snow expected. Total snow accumulations up to 2 to 4 inches. Locally higher amounts to 6 inches where snow bands set up. * WHERE...Southwest Bighorn Basin, Southeast Bighorn Basin, and Cody Foothills. * WHEN...From 5 AM early this morning to 5 PM MST this afternoon. * IMPACTS...Plan on slippery road conditions. The hazardous conditions could impact the Tuesday morning and evening commutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter . For winter road conditions from the Wyoming Department of Transportation, visit https://wyoroad.info . && $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Hattings