Winter Storm Watch

Locations Affected

Ten Sleep, WY ∙ Shoshone Lake, WY ∙ Fremont Peak, WY ∙ Yellowstone Lake, WY ∙ Atlantic City, WY ∙ Hunt Mountain, WY ∙ Crystal Peak, WY ∙ Mount Holmes, WY ∙ Lewis Lake, WY ∙ Bear Peak, WY

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 THURSDAY EVENING THROUGH FRIDAY AFTERNOON... * WHAT...Heavy snow possible. Total snow accumulations between 12 and 20 inches possible, with the highest amounts on the western slopes of the northern Bighorns. Winds could gust as high as 45 mph. * WHERE...Bighorn Mountains Southeast and Bighorn Mountains West. * WHEN...From Thursday evening through Friday afternoon. * IMPACTS...Travel could be very difficult, including over Granite and Powder River Passes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts for updates on this situation.

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