Winter Storm Watch

Full Alert Message

URGENT - WINTER WEATHER MESSAGE National Weather Service Riverton WY 147 AM MDT Wed Apr 1 2026 ...WINTER STORM WATCH IN EFFECT FROM THIS EVENING THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations between 12 and 18 inches possible with locally up to 24 inches in the western slopes of the Tetons. In northern Yellowstone Park, 6 to 10 inches of snow is possible. Winds could gust as high as 40 mph. * WHERE...Teton and Gros Ventre Mountains and Yellowstone National Park. * WHEN...From this evening through Friday afternoon. * IMPACTS...Travel could be very difficult, including over Teton and Togwotee Passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation.