Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

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Last Map Update: Thu, Aug 27, 2026 at 4:36:24 pm PDT

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National Weather Service Salt Lake City, UT

National Weather Service San Joaquin Valley, CA

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National Weather Service NWS Flagstaff, AZ

National Weather Service Los Angeles, CA

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Today's Storm Chances

Extreme Heat Through Friday

Increasing moisture will bring low chances of showers and thunderstorms to the region this afternoon. However, the cloud cover associated with this moisture increase will make it difficult for storms to develop in some areas.

Overnight low temperatures will continue in the upper-80s to low-90s this week as afternoon high temperatures climb to 5 to 8 degrees above seasonal normals. Late-season heat can be very dangerous, as tourists are coming in from cooler climates and locals are exhausted from fighting the heat all summer. Stay hydrated and avoid caffeine and alcohol!

Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

NWS Forecast Office Las Vegas, NV