Weather Alerts For Yellowstone National Park, WY

URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1229 PM MST Thu Dec 4 2025 Yellowstone National Park-Absaroka Mountains- Including the cities of Mammoth, Old Faithful, and Lake 1229 PM MST Thu Dec 4 2025 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 5 PM THIS AFTERNOON TO 2 PM MST SATURDAY... * WHAT...Snow expected. Total snow accumulations of 4 to 8 inches; accumulations of 10 to 15 inches at the South and Northeast entrances and near Pahaska; locally higher amounts of 20 to 30 inches in the higher elevations in the Pitchstone Plateau and the western slopes of the Absarokas. Winds gusting as high as 45 mph over the Absarokas through the period. Gusts as high as 35 mph in Yellowstone NP Friday night. * WHERE...Absaroka Mountains and Yellowstone National Park. * WHEN...From 5 PM this afternoon to 2 PM MST Saturday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Thursday evening and Friday morning 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 . &&