High Wind Warning

Locations Affected

Great Falls, MT ∙ Canyon Creek, MT ∙ Simms, MT ∙ Red Rock Lakes National Wildlife Refuge, MT ∙ Big Sky, MT ∙ Bozeman, MT ∙ Raynesford, MT ∙ Centennial Mountain, MT ∙ Harlem, MT ∙ Lewistown, MT

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Great Falls MT 402 PM MST Mon Dec 15 2025 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 3 AM WEDNESDAY TO MIDNIGHT MST WEDNESDAY NIGHT... * WHAT...West winds 30 to 40 mph with gusts up to 70 mph expected. * WHERE...The Interstate 90 Corridor between Bozeman and Whitehall, Gates of the Mountains, Helena Valley, Big Belt, Bridger and Castle Mountains, Meagher County Valleys, Elkhorn and Boulder Mountains, and Canyon Ferry Area. * WHEN...From 3 AM Wednesday to midnight MST Wednesday Night. * IMPACTS...High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. Damaging winds will blow down trees and power lines. Power outages are expected. Travel will be very difficult, especially for high profile vehicles. PRECAUTIONARY/PREPAREDNESS ACTIONS... People are urged to secure loose objects that could be blown around or damaged by the wind. If possible, consider delaying travel during the period of highest winds or finding an alternate route.

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