National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

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Last Map Update: Tue, Dec 9, 2025 at 6:36:44 pm PST

A warm and wet storm will move through Monday through Tuesday, bringing a chance of mud and rockslides in steep terrain and burn scars to Chelan County. A Flood Watch is in effect until 4 PM Thursday. Moderate to heavy rain will lead to excessive runoff and subsequent flooding of smaller streams and creeks.
An extended period of moderate to heavy rain and snowmelt is in the forecast for North ID Monday through Thursday. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone areas. In addition, there will be an increased risk for rock slides in steep terrain.
Another round of strong southwesterly winds is expected Wednesday afternoon through Thursday morning. Sustained speeds of 20 to 35 mph and gusts up to 55 mph are anticipated for the Columbia Basin, Palouse, Spokane/CdA area, and Blue Mountains.

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