Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

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Last Map Update: Thu, Jan 1, 2026 at 2:30:07 pm PST

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

Winter Storm Warning

High Wind Warning

Gale Warning

Coastal Flood Advisory

Small Craft Advisory

Wind Advisory

Winter Storm Watch

Flood Watch

Coastal Flood Watch

High Wind Watch

Marine Weather Statement

Hydrologic Outlook

Weather Hazards

Wind Gust Forecast Timeline

Rainfall Forecast Timeline

High Tide Outlook

Various weather hazards will impact northwest California through the weekend. Stay safe during the storm secure your area for wind & flood impacts and avoid travel during the strongest winds and heaviest rains, if possible. Check for details in your area.

Stronger winds will impact northwest California over the weekend.

High intensity rainfall can cause small stream & urban flood impacts. Use the forecast timeline to plan around heavier rainfall.

Highhttps://n-bdqzk4vnxkt722x4k7obrl2453eefiwoobpkh5a-0lu-script.googleusercontent.com/userCodeAppPanel# astronomical tides in combination with a storm surge could generate some coastal flooding around ow lying areas along the northwest California coast and low areas around Humboldt Bay.