National Weather Service United States Department of Commerce

Prolonged Atmospheric River Will Impact the Northwest Early this Week

A weather system in the Pacific Northwest will produce rain throughout the day, before a potent atmospheric river produces a prolonged round of heavy rainfall, widespread urban and river flooding, and high elevation snow to the region Monday through Wednesday. Showers and thunderstorms may produce isolated damaging winds, a brief tornado, and locally heavy rainfall across parts of Florida today. Read More >

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Last Map Update: Tue, Dec 9, 2025 at 3:06:13 am PST

Recent guidance continues to trend farther north with the heaviest rainfall through Wednesday. Here are the latest forecast rain amounts. Impacts will be minimal along the coast and NW sections of our area.
Gusty winds are expected east of the Cascades in Oregon through Tuesday evening. Winds of 20-30 mph are expected with gusts up to 50 mph. Travel will be difficult, especially for high profile vehicles. Be sure to secure loose objects on your property.

 

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