Heavy Rain and Flash Flooding Concerns in California; Heavy Snow in the Sierra

An atmospheric river will bring heavy rainfall to lower elevations of California this week, and heavy snow to the Sierra Nevada mountains. Flash flooding, some of which may be locally considerable, will be a concern on the western foothills of the Sierra Nevada mountains through Tuesday. Landslides, rockfalls and mudslides are possible in the Southern California mountains. Read More >

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Last Map Update: Tue, Dec 23, 2025 at 8:44:24 pm PST

Watches, Warnings & Advisories

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National Weather Service Salt Lake City, UT

National Weather Service San Joaquin Valley, CA

National Weather Service NWS Flagstaff, AZ

Winter Storm Warning

High Wind Warning

Winter Weather Advisory

Lake Wind Advisory

Wind Advisory

Flood Watch

High Wind Watch

Wind Advisory

A Wind Advisory is in effect for most of Central Nevada from 4 PM PST this afternoon until 4 PM PST Wednesday afternoon. South winds 20 to 30 mph with gusts to 50 mph are expected. Blowing dust will reduce visibilities at times. Travel will be difficult, particularly for high profile vehicles.