Strengthening Storm in the Upper Great Lakes; Thunderstorms in the Ohio Valley and Mid-Atlantic

A strengthening storm system over the Upper Great Lakes will bring moderate to heavy snow to the Upper Peninsula of Michigan through Tuesday morning. Ahead of this system, strong to severe storms may develop over the Ohio Valley, portions of the Appalachians, and the Mid Atlantic Monday. Read More >

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Last Map Update: Mon, Apr 14, 2025 at 6:50:16 am PDT

Watches, Warnings & Advisories

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National Weather Service San Francisco Bay Area, CA

Small Craft Advisory

Hazardous Seas Warning

Gale Watch

Forecast Outlook

Isolated Mountain Thunderstorms Possible

Here is the forecast outlook valid from April 14-18, 2025 for Northwest California.

Isolated Thunderstorms are possible Tuesday and Wednesday afternoons. These are mainly expected in eastern Trinity county, northeast Mendocino county and northern Lake county. When dark clouds approach, seek shelter immediately inside a building or a vehicle. Remember, lightning can strike without any warning and sometimes several miles from the parent cloud. For details on your location visit weather.gov/eureka.