Major River Flooding in Western Washington; Very Cold Temperatures in the Northern Plains

Major river flooding following heavy rainfall will continue to bring a significant risk to life and property in Washington. Arctic air will bring near record cold temperatures and dangerous wind chills from the Northern High Plains into the Mid-South and Mid-Atlantic through the weekend. A narrow band of snow is likely from the Mid-West, Upper Ohio Valley into the Central Appalachians. Read More >

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Last Map Update: Sat, Dec 13, 2025 at 12:54:14 am MST

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National Weather Service Great Falls, MT

Winter Storm Warning

Avalanche Warning

Flood Warning

Winter Weather Advisory

Special Weather Statement

Air Stagnation Advisory

Hazardous Weather Outlook

Hydrologic Outlook

Another Atmospheric River Early Next Week

Snow/Freezing Rain Potential Friday-Saturday AM

Foggy Mornings

Heads Up Western Montana/North-Central Idaho! 🌧️➡️❄️ Another atmospheric river early next week: ✅ Mon-Tue: Wet & Mild. High snow levels (6000-7000ft). Watch for renewed rises on creeks & rivers. Mudslide potential ✅ Wednesday: Cold Front hits! 🥶 Rain turns to snow showers down to valley floors. 🚗 Travel Hazard: Slick roads, especially over passes. Winds could be damaging, with trees blocking road access and power outages. Drive with extreme care.

Winter Weather Alert Friday-Saturday morning ❄️🚗 Heads up, Northwest Montana! Moderate to occasional heavy snow will impact travel conditions Friday into early Saturday across the Glacier Region. 📍 Where: The biggest concern is from Essex to Marias Pass on US-2 for slick conditions and reduced visibility in snow. But localized freezing rain may extend as far west as West Glacier. ⚠️ Impacts: Snowfall Rates: Bursts of 0.5" to 1" per hour are possible. Travel: Expect slick conditions and reduced visibility at times. Snow Levels: Generally 2000-3000 ft, with brief wet snow or light freezing rain possible in the valley floors. Please allow extra time on Highway 2 and surrounding areas.

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Major River Flooding in Western Washington; Very Cold Temperatures in the Northern Plains

NWS Forecast Office Missoula, MT