Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

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Last Map Update: Tue, Jul 21, 2026 at 10:38:51 am 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

High Surf Advisory

Flood Watch

Extreme Heat Watch

Heating Up Toward The Weekend

Hotter and drier weather sets in by the end of the week and into the weekend for the Greater Mojave Desert with widespread Major Heat Risk spreading over the area. Expect highs near or exceeding 110F for most of the desert valleys Thursday into early next week.

Severe Thunderstorm and Tropical Storm Bertha Impacts

NWS Forecast Office Las Vegas, NV