The US National Weather Service said the Mid-Atlantic coast could likely face risks of scattered flash flooding on Thursday due to thunderstorms expected to move in from the Midwest, Ohio Valley and southern Arizona.
Meanwhile, continued dangerous heat is expected in South and Southeast US, with similar conditions expected to build in Southwest.
The NWS issued an extreme heat warning for Oklahoma's Ardmore, Ada, Atoka, Durant, and Hugo, primarily served by OGE Energy (OGE) unit Oklahoma Gas & Electric and American Electric Power (AEP) subsidiary Public Service Co. of Oklahoma.
In Texas, a similar warning was raised for Gainesville, Bowie, Decatur, Jacksboro, Graham, Fort Worth, Granbury, Dallas, Cleburne, Stephenville, Waxahachie, Denton, Canton, Emory, Sulphur Springs, Sherman, Paris, Greenville and Texarkana. These places are primarily served by Sempra Energy (SRE) unit Oncor and TXNM Energy's (TXNM) Texas-New Mexico Power.
Affected areas in Arizona include Kingman, Bullhead City, Lake Havasu City, Parker, Yuma, Gila Bend, Dateland, Ajo, Wickenburg, Phoenix, Casa Grande, Globe, Tucson, Nogales, Sells, Green Valley, Oro Valley, Oracle, San Carlos, Safford, Oracle, Oro Valley, Green Valley, and Grand Canyon Village. A flash flood warning was raised for areas near Casa Grande. Arizona is primarily served by Pinnacle West Capital (PNW) unit Arizona Public Service Company, and UNS Energy subsidiaries Unisource and Tucson Electric Power.
California's Blythe, El Centro Imperial, Palm Springs, Twentynine Palms, Baker, Death Valley, Mount Laguna, Julian, Borrego Springs, Indio, Beaumont, and Barstow, primarily served by Edison International (EIX) unit Southern California Edison, were also placed under an extreme heat warning watch.
Also covered under the watch were areas near El Dorado and Mena in Arkansas, which mostly fall under the areas served by Entergy's (ETR) Arkansas unit and AEP subsidiary Southwestern Electric Power Company.
The NWS issued a severe thunderstorm warning for Clarksville and Dyersburg in Tennessee, where Tennessee Valley Authority is the primary service provider.
Areas near Sikeston and Cape Girardeau were also covered under a severe thunderstorm warning watch with a flash flood warning also issued for these places, along with areas near Centerville. Evergy (EVRG), Ameren's (AEE) Missouri unit, and Algonquin Power & Utilities (AQN) subsidiary Liberty are the major service providers in the state.
In Kentucky, a severe thunderstorm warning was raised for areas near Paducah and Hopkinsville, with areas near Paducah also covered for a flash flood warning, along with Mayfield. PPL (PPL) subsidiary Louisville Gas and Electric & Kentucky Utilities, AEP unit Kentucky Power, and Duke Energy (DUK) are among the major service providers in Kentucky.
Small parts of southern Illinois were also placed under warnings for severe thunderstorm and flood floods. A flash flood warning was also issued for Champaign and Danville, while Decatur, Canton and Havana were placed under a flood warning. Ameren's Illinois unit and Exelon (EXC) subsidiary ComEd are among the major service providers in Illinois.
A flood warning was raised for Indiana's Vincennes, Seymour, Fort Wayne, Marion, Terre Haute and nearby areas bordering Illinois, and areas near Crawfordsville. Greenburg and Seymour were also placed under a severe thunderstorm warning, while a flash flood warning was raised for areas near Indianapolis.
NiSource (NI) unit Northern Indiana Public Service Company, Duke Energy, and the Indiana unit of AES (AES), AEP unit Indiana Michigan Power, and CenterPoint Energy (CNP) Indiana unit are among the major service providers in the state.
In Ohio, a flash flood warning was raised for Dayton, while areas near Lima were placed under a flood warning.