Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

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Last Map Update: Thu, Jan 1, 2026 at 6:52:31 am PST

Watches, Warnings & Advisories

National Weather Service Seattle/Tacoma, WA

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Winter Weather Advisory

Dense Fog Advisory

Freezing Fog Advisory

Special Weather Statement

Air Stagnation Advisory

Air Stagnation

Ice Accumulation Chances Thursday through Friday

Winter Weather Advisories

Air Stagnation Advisories have been issued for Central Oregon, North-Central Oregon, Lower Columbia Basin of Washington/Oregon, Northern/Southern Blue Mountain Foothills, and the Yakima/Kittitas Valleys until noon on Thursday. Stagnant conditions will have the potential to trap pollutants near the ground and deteriorate air quality.

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Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

NWS Forecast Office Pendleton, OR