The US National Weather Service said there was a possibility of severe thunderstorms in the Mid-Atlantic through Tuesday, while the central/southern Plains were likely to experience severe thunderstorms and heavy rain on Tuesday and Wednesday.
Hazardous heat is likely to persist across the southern US and spread across the West through the middle of the week, while elevated to critical fire weather conditions are expected in the Four Corners region due to hot and dry weather, the agency said.
The NWS issued a red flag warning early Monday for Utah's Richfield, Delta, Milford, St. George, Zion National Park, Zion National Park, Escalante, Bryce Canyon National Park, Capitol Reef National Park, Green River, Moab, Monticello, Blanding, Bluff and Cedar City. These places are primarily served by PacifiCorp's Rocky Mountain Power.
In Colorado, a similar warning was raised for Craig, Meeker, Steamboat Springs, Kremmling, Grand Junction, Aspen, Buena Vista, Rifle, Vail, Montrose, Nucla, Gunnison, Lake City, Telluride, Alamosa, Pagosa Springs, Durango, Cortez, Salida, South Fork, Creede, Wolf Creek Pass, Saguache, San Luis, Leadville, Canon City, Granby, Georgetown, and Fairplay. Xcel Energy (XEL) and Black Hills (BKH) unit Black Hills Energy are the primary service providers in the state.
Affected areas in Oregon included The Dalles, Maupin, Madras, Fossil, Condon, Hermiston, and Pendleton, primarily served by PacifiCorp's Pacific Power.
The NWS an extreme heat warning for Arizona's Parker, Yuma, Tucson, Globe, Phoenix, Wickenburg, Nogales, San Carlos, Oracle, Oro Valley, Benson, Green Valley, Sierra Vista, Safford, and Grand Canyon Village. Pinnacle West Capital (PNW) unit Arizona Public Service Company, and UNS Energy (UNS) subsidiaries Unisource and Tucson Electric Power are the major electric utility providers in Arizona.
An extreme heat warning was also raised for California's El Centro Imperial, and Blythe, primarily served by Edison International's (EIX) Southern California Edison.
The NWS issued a flash flood warning for Louisiana's Monroe and areas near Shreveport, while a flood warning was raised for Lake Charles, Jennings, Oberlin, Glenmora, Marksville, Opelousas, and areas bordering Mississippi and Arkansas. Entergy's (ETR) Louisiana unit, American Electric Power's (AEP) Southwestern Electric Power Company, and Cleco are among the major service providers in Louisiana.
In Texas, a flood warning was issued for George West, Beaumont, Bryan, and Lufkin. These places are majorly served by the Texas units of American Electric Power and Entergy, and Centrepoint Energy (CNP).
Mississippi's Hattiesburg, Gulfport, Vicksburg, Brookhaven, Laurel, Meridian, and Jackson, primarily served by Southern Co. (SO) unit Mississippi Power, were also placed under a flood warning watch.
Affected areas in Kansas, where Evergy (EVRG) is among the major service providers include, Wellington, Arkansas City, Hutchinson, Wichita, Iola, and Coffeyville.
The NWS also issued flood warnings for Pensacola and DeFuniak Springs in Florida, where NextEra Energy (NEE) unit Florida Power & Light is the primary service provider; and Demopolis, Monroeville, and Huntsville in Alabama, primarily served by Southern Company unit Alabama Power.
In Illinois, a flood warning was raised for Princeton, Peoria, Galesburg, Macomb, Canton, Decatur, Champaign, Havana, Jacksonville, Olney, and areas bordering Missouri and Indiana. Ameren's (AEE) Illinois unit and Exelon (EXC) subsidiary Commonwealth Edison are among the major service providers in Illinois.
The NWS also issued flash flood warnings for areas near Beckley and Charleston in West Virginia and small pockets of New Jersey and New York.
Flood warnings were also raised for certain pockets of Indiana, Oklahoma, Iowa, Missouri, Arkansas, Washington, West Virginia and Massachusetts.