Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

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Last Map Update: Wed, Jul 29, 2026 at 9:10:54 pm PDT

Watches, Warnings & Advisories

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

Extreme Heat Warning

Heat Advisory

Coastal Flood Advisory

High Surf Advisory

Dangerous Heat Returns

5-Day Temperature Outlook

Above-normal temperatures continue, returning to dangerous levels Thursday through Sunday. Daily and monthly temperature records will be challenged.

Temperatures will climb through the weekend, yielding widespread Major-to-Extreme HeatRisk in the coming days. Extreme Heat Warnings and Heat Advisories go into effect across the Mojave Desert and Great Basin tomorrow, continuing through Sunday.

Extreme Heat and Excessive Rainfall Today

NWS Forecast Office Las Vegas, NV