Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

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Last Map Update: Tue, Jul 28, 2026 at 7:02:18 pm PDT

Watches, Warnings & Advisories

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National Weather Service San Joaquin Valley, CA

National Weather Service Los Angeles, CA

Extreme Heat Warning

Gale Warning

Heat Advisory

Small Craft Advisory

Beach Hazards Statement

Beach Hazards

Elevated Fire Weather Threat

Planning a trip to the coast over the next few days? Take extra precautions near the water! A long-period southerly swell, generated by distant tropical cyclones in the Eastern Pacific, is pushing toward our coastline. This swell will bring elevated surf and hazardous ocean conditions through mid-week. Here is what you need to know: What: Increased risk of sneaker waves and strong rip currents, with breaking waves up to 10 feet expected at south and southwest-facing beaches and breakpoints. Where: Pacific Coast beaches across the San Francisco Bay Area and Central Coast. When: Now active through Saturday Afternoon Beach Safety Tips: 🪨 Stay Off Infrastructure: Keep off rock outcrops, jetties, piers, and breakwaters—sudden large waves can easily knock you off your feet. 🏊 Avoid Hazardous Surf: Remain out of the water. 👁️ Stay Alert: Never turn your back on the ocean! Always keep a close watch on children and pets near the water's edge.

Seasonably elevated conditions with rapid rates of spread possible on any wind-and-terrain aligned starts in receptive vegetation. Afternoon RH will range between 10 and 30 percent, with morning RH recovering between 25 and 50 percent (mainly at elevations above 2,000 feet). Be sure to avoid burning debris or leaving campfires unattended, avoid using equipment that could create a spark. Properly extinguish and discard cigarette butts and secure tow chains to avoid dragging! The fire weather threat will be greatest through mid-week, but may persist through next weekend, especially across the interior Central Coast.

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Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

NWS Forecast Office San Francisco, CA