National Weather Service United States Department of Commerce

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

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Last Map Update: Wed, Dec 24, 2025 at 7:42:12 pm PST

There are no watches, warnings, or advisories at this time.

The latest holiday outlook calls for valley rain and light mountain snow on Christmas Day, with highs reaching the 30s and 40s. The mix of rain and snow will continue into Friday, specifically impacting the Northeast valleys and mountains.

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