Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

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Last Map Update: Wed, Dec 24, 2025 at 12:34:39 am PST

Watches, Warnings & Advisories

National Weather Service Seattle/Tacoma, WA

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High Wind Warning

Winter Weather Advisory

Coastal Flood Advisory

Dense Fog Advisory

Wind Advisory

High Wind Watch

Special Weather Statement

High Wind Warnings

Additional Snow During Holiday Travel

High Wind Warnings have been issued from 7 AM through 2 PM Wednesday across the Grande Ronde Valley, Wallowa County, and the Northern/Southern Blue Mountain Foothills of Washington and Oregon. Sustained south-southeast winds of 30-40 mph with gusts up to 65 mph will be possible.

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Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

NWS Forecast Office Pendleton, OR