Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

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Last Map Update: Tue, Dec 9, 2025 at 5:48:39 am PST

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

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National Weather Service Los Angeles, CA

Dense Fog Advisory

Small Craft Advisory

Wind Advisory

Beach Hazards Statement

Dense Fog Advisory for the Foothill Region.

Dense Fog - High Transportation Risk

A Dense Fog Advisory is in effect through 11 AM Tuesday, December 9 for Foothill region of Central California which includes the elevations from 1,000 feet to 2,500 feet. Mountain roads, which include: 41, 58, 152, 168, 198 will see sudden drops in visibilities from several miles to under a quarter mile.

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Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

NWS Forecast Office Hanford, CA