Tracking Atmospheric River for the West Coast; Space Weather Storming Continues

An atmospheric river will bring threats of gusty to high winds and heavy rainfall to California mainly Thursday into Saturday which may bring areas of flooding and wind damage. Heavy snow will be possible over the Sierra Nevada mountains Thursday into Friday associated with the atmospheric river. Minor to severe geomagnetic storming (space weather) is expected to continue into early Thursday. Read More >

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Last Map Update: Wed, Nov 12, 2025 at 11:24:13 pm MST

Watches, Warnings & Advisories

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National Weather Service Great Falls, MT

High Wind Watch

Active Weather Pattern Ahead!

Enjoy the quiet start to the week! A major pattern change is on the way. We are shifting from our mild, quiet stretch to what could be our most active and unsettled storm cycle of the season so far. This multi-day event kicks off early Friday (Nov 14) and could last through Wednesday (Nov 19), bringing widespread mountain snow and valley rain/snow chances. The biggest takeaway: Winter driving conditions are likely on the passes, and POSSIBLE in many valleys. Plan ahead for any travel this weekend and next week. Are your snow tires on yet?”