Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

Click a location below for detailed forecast.

Last Map Update: Wed, Nov 20, 2024 at 10:36:16 pm PST

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

National Weather Service San Joaquin Valley, CA

Winter Storm Warning

High Wind Warning

Avalanche Warning

Flood Warning

Gale Warning

Winter Weather Advisory

Flood Advisory

High Surf Advisory

Hazardous Seas Warning

Lake Wind Advisory

Wind Advisory

Beach Hazards Statement

Gale Watch

Flood Watch

High Wind Watch

Hydrologic Outlook

Winter Storm Warning

Snowfall Accumulations

Flood Watch

Moderate to Heavy Rain

Rainfall Amounts

Heavy Snow. Timing: Through 10pm Wed, Nov 20, 2024. Forecast: Shasta County - 5 to 10 inches of snow above 3000 ft. Coastal range and Sierra - 10 to 20 inches of snow above 4500 ft with 5 to 10 inches down to 3500 ft. 2 to 3 ft at highest peaks. Winds gusting up to 50 mph. Impacts: slick travel conditions with snow covered roads. Travel could be difficult. Chain controls likely. Gusty winds could bring down tree branches.

Snow forecast. Map on the left shows snow amounts for mountain locations across interior northern California. Snow amounts generally range from 10 to 20 inches, mainly above 4500’. Additional accumulations of 5-10 inches down to 3500 feet and down to 3000 feet in Shasta County. Impacts: Moderate. Snow covered roads and difficult travel. Chain controls and travel delays possible. Snow levels 3000-4000 feet through Wednesday morning, rising to 4500-5500 feet Wednesday afternoon, and increasing to 7000-8000 feet by Thursday. Timing: Through Saturday morning.

Our Flood Watch remains in effect for the northern and central Sacramento Valley and adjacent foothills below 3000 ft, from 10pm tonight to 4am Saturday. Expect sharp rises on rivers, creeks, and streams, as well as ponding on roadways and in other low-lying areas.

An active weather pattern will bring periods of moderate to locally heavy rain mid to late week this week. Ponding water on roadways, rises on small creeks and streams, and slick travel conditions are expected.

An active weather pattern will bring periods of moderate to locally heavy rain mid to late week this week. Ponding water on roadways, rises on small creeks and streams, and slick travel conditions are expected.