Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

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Last Map Update: Sat, Aug 16, 2025 at 6:10:46 pm PDT

Watches, Warnings & Advisories

National Weather Service San Francisco Bay Area, CA

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National Weather Service Los Angeles, CA

Small Craft Advisory

Isolated Dry Lightning Potential Today

Isolated thunderstorms are possible this afternoon in the high elevations of the Sierra Nevada as mid-level moisture lifts along the range. Warm, dry conditions may cause precipitation to dissipate before reaching the surface, raising the concern for dry lightning to occur especially in areas of below average fuel moisture. *Updated image*