National Weather Service United States Department of Commerce

Prolonged dangerous winter storm conditions in the high country of western Montana and north-central Idaho later this week with localized damaging winds

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Last Map Update: Tue, Mar 10, 2026 at 9:32:17 am MDT

Heads up, western Montana! 🌬️ Damaging west winds are looking possible from Wednesday night through Thursday. We're forecasting gusts of 50-70 mph across our primary area of concern. The mountains have an 80% chance of experiencing gusts exceeding 70 mph. In the valleys, there is a 40-70% chance of gusts over 50 mph. Even though the chance of 70 mph winds in the valleys is lower, the potential damage if they do occur is severe enough that you should prepare now. Primary threats include falling trees and branches, potential power outages, dangerous travel for high-profile vehicles, and blizzard conditions in the backcountry. Please take time to secure loose outdoor items, avoid parking under large trees, and charge your devices in case of power loss.
🚨 If your late-week plans involve the backcountry or high mountain passes, it's time to reconsider. Extreme winter weather is expected from Wednesday night through Saturday (March 11-14), with the most critical danger above 5,000 feet. We are tracking snowfall that will be measured in feet (up to 3-6 ft in some areas), alongside blizzard conditions and winds strong enough to bring down trees. Travel over Marias, Lolo, and Lost Trail passes will become treacherous. We strongly advise delaying backcountry recreation and pass travel until conditions improve. Stay safe, ensure your vehicle is equipped with a winter kit, and always check local avalanche forecasts. 🏔️❄️

 

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