The US National Weather Service said the Midwest and Ohio Valley could potentially experience multiple severe thunderstorms on Tuesday, carrying severe wind gusts surpassing 75 miles per hour.
Parts of Ohio Valley could also face flash and urban flooding risks due to heavy to excessive rainfall and a moderate risk for excessive rainfall has been issued, the agency said.
The NWS issued a red flag warning early Tuesday for Montana's Dillon, Butte, Boulder, Anaconda, and areas near Sula and Hamilton, where Northwestern Energy (NWE) is the major service provider.
A similar warning was raised for Wyoming's Cody, Buffalo, Dubois, Riverton, Thermopolis, Pinedale, Big Piney, Rocksprings, Rawlins, Laramie, Casper, Douglas, Lander, Muddy Gap, Saratoga, Centennial, Elk Mountain, Medicine Bow, Shirley Basin, Garrett, Glendo, Lusk, Lance Creek, Bill, Glenrock, Chugwater, Pine Bluffs, Bosler, and Kaycee. Wyoming mostly falls under the service area of PacifiCorp's Rocky Mountain Power.
The NWS issued an extreme heat warning for Missouri's Joplin, Nevada, Clinton, Sedalia, Jefferson City, Osage Beach, Camdenton, Columbia, Boonville, Warrensburg, Harrisonville, Buttler, Washington, and St. Louis. Missouri is primarily served by Evergy (EVRG), Ameren's (AEE) Missouri unit, and Algonquin Power & Utilities (AQN) subsidiary Liberty.
In Kansas, where Evergy is among the major service providers, Paola and areas near Iola were covered under a similar warning.
Affected areas in Illinois included Chester, and areas near Carlinville and Vandalia, which are primarily served by Ameren's Illinois unit.
The NWS issued a flash flood warning for Ohio's Sandusky and areas near Zanesville and Youngstown, while a flood warning was raised for Zanesville, New Lexington, and areas near Lima. Areas near Jackson were placed under a severe thunderstorm warning watch. FirstEnergy (FE) subsidiaries Toledo Edison and Ohio Edison, and the Ohio units of AES (AES) and American Electric Power (AEP) are among the major service providers in these places.
In West Virginia, a severe thunderstorm warning was issued for Huntington, Charleston, Snowshoe, and Sutton, served by AEP subsidiary Appalachian Power and FirstEnergy's Mon Power.
The NWS also issued flash flood warnings for Johnstown in Pennsylvania; and areas near Cumberland and Oakland in Maryland.