The US National Weather Service said parts of South Texas, the western Gulf Coast, and Lower Mississippi River Valley are expected to experience excessive rainfall through Thursday, with risks of considerable local flash flooding.
Meanwhile, the region stretching from central and northern California and the Pacific Northwest is likely to encounter hot temperatures.
The NWS early Tuesday issued a red flag warning for Utah's Vernal, Duchesne, Price, Delta, Manti, Richfield, Delta, Milford, St. George, Zion National Park, Escalante, Bryce Canyon National Park, Capitol Reef National Park, Green River, Moab, Monticello, Blanding, and Bluff. These places primarily fall under the service area of PacifiCorp's Rocky Mountain Power.
A similar warning was raised for New Mexico's Farmington, Chama, Gallup, and Santa Fe. TXNM Energy (TXNM) unit Public Service Co. of New Mexico and Xcel Energy (XEL) are among the primary electricity suppliers in the state.
Affected areas in Colorado included Craig, Rangely, Meeker, Rifle, Vail, Grand Junction, Aspen, Buena Vista, Montrose, Nucla, Gunnison, Lake, Telluride, Alamosa, Durango, Cortez, Saguache, Canon City, San Luis, Salida, South Fork, Creede, Wolf Creek Pass, and Leadville. The state is primarily served by Xcel Energy and Black Hills (BKH) unit Black Hills Energy.
Also covered under a red flag warning watch were Wyoming's Glenrock, Bill, Lusk, Lance Creek, Glendo, Douglas, Torrington, Wheatland, Chugwater, and Cheyenne. These areas primarily fall under the service area of PacifiCorp's Rocky Mountain Power.
In Nebraska, areas placed under a warning for fire weather conditions included Harrison, Chadron, Scottsbluff, Bridgeport, Alliance, Harrisburg, Kimball, Sidney, Rushville, Oshkosh, Arthur, Hyannis, Chappell, and Ogallala. A majority of Nebraska is covered under the service area of regional transmission organization Southwest Power Pool, with Midcontinent ISO also serving some areas.
A red flag warning was issued for Idaho's Mountain Home, Twin Falls, Shoshone, Burley, Malad City, Preston, Montpelier, Arco, Mackay, Dubois, Rexburg, Rigby, Idaho Falls, Driggs, Blackfoot, Palisades, Pocatello, Soda Springs, and Island Park. Rocky Mountain Power and Idacorp's (IDA) Idaho Power are among the major service providers in these places.
Maupin, Condon, Fossil, Hermiston, Pendleton, The Dalles, primarily served by PacifiCorp's Pacific Power, were the affected areas in Oregon.
In Washington, a red flag warning was raised for Goldendale, Sunnyside, Yakima, Walla Walla, Pasco, Connell, Moses Lake, Ellensburg, Wenatchee, Winthrop, Chela, Omak, Coulee Dam, Spokane, Rosalia, Ritzville, and Pullman. Meanwhile, a flood warning was raised for areas near Winthrop. Puget Sound Energy, Pacific Power, and Avista (AVA) unit Avista Utilities are among the primary electricity service providers in the state.
The NWS issued an extreme heat warning for California's Shasta Dam, Redding, Red Bluff, Corning, Paradise, Oroville, and Quincy, primarily served by PG&E (PCG) unit Pacific Gas and Electric Company. A similar warning was raised for Grand Canyon Village in Arizona, where Pinnacle West Capital (PNW) unit Arizona Public Service Company is the primary service provider.
In Missouri, the NWS raised a flood warning for Nevada, Joplin, Osage Beach, Lebanon, Springfield, Camdenton, Boonville, Columbia, Chillicothe, Carrollton, St. Louis, Washington, and Jefferson City. Evergy (EVRG), Ameren's (AEE) Missouri unit, and Algonquin Power & Utilities (AQN) subsidiary Liberty are the major service providers in Missouri.
Also covered under a flood warning watch were Princeton, Peoria, Pekin, Canton, Havana, Jacksonville, Champaign, Decatur, Chester, and areas near Quincy. Ameren's Illinois unit and Exelon (EXC) subsidiary ComEd are among the major service providers in Illinois.
In Texas, the NWS issued a flood warning for Laredo, Corpus Christi, Victoria, Refugio, Bay City, San Antonio, Bryan, and Beaumont. The Texas units of American Electric Power (AEP) and Entergy (ETR) and Centrepoint Energy (CNP) are among the major service providers in these places.
A similar warning was issued for areas near Coffeyville and Iola in Kansas, where Evergy is among the major service providers.
The NWS also issued flood warning for certain pockets of Louisiana and Iowa.