National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

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Last Map Update: Tue, Dec 9, 2025 at 4:16:32 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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