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 1:38:35 pm PST

This week's weather will feature periodic mountain snow and lowland rain and snow each day. Breezy conditions are also forecast heading into Wednesday and again for Friday.
High wind warning in effect from 7 AM to 2 PM Wednesday. Wind gust of 50 to 60 mph are forecast, with localized gusts to 70 mph possible. Damaging wind gusts and localized power outages possible.

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