Winter Weather Advisory

Locations Affected

West Thumb, WY ∙ Terrace Mountain, WY ∙ Mount Moran, WY ∙ Yellowstone Lake, WY ∙ Pinnacle Peak, WY ∙ Lewis Lake, WY ∙ Yellowstone National Park, WY ∙ Yellowstone National Park Division, MT ∙ Grand Teton, WY ∙ Mount Washburn, WY

Full Alert Message

URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 1147 AM MST Sat Feb 22 2025 ...WINTER WEATHER ADVISORY IN EFFECT FROM 11 AM SUNDAY TO 11 AM MST MONDAY... * WHAT...Snow expected. Total snow accumulations between 6 and 10 inches, with up to 16 inches for the highest elevations of the Teton Mountains. Winds gusting as high as 40 mph, especially Sunday night. * WHERE...Teton and Gros Ventre Mountains. * WHEN...From 11 AM Sunday to 11 AM MST Monday. * IMPACTS...Travel could be very difficult due to falling and blowing snow over mountain passes, such as Teton and Togwotee Passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. 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.

---