The US National Weather Service said most of the areas falling under the northern Great Plains are expected to experience elevated to critical fire weather conditions, including gusty winds and low relative humidity on Tuesday.
Meanwhile, parts of central Plains stretching northeastward into the Midwest could potentially experience isolated severe thunderstorms with strong wind gusts and hail during the day, while the eastern Florida peninsula may encounter additional storms capable of damaging winds.
The NWS early Tuesday issued a red flag warning for Colorado's Craig, Rangely, Meeker, Montrose and Nucla. The primary service providers in the state are Xcel Energy (XEL) and Black Hills' (BKH) Black Hills Energy.
A similar warning was raised for Nebraska's Holdrege, Kearney, Lexington, Grand Island, Broken Bow, Ord, Burwell, and Norfolk. A large part of Nebraska is covered by the regional transmission organization Southwest Power Pool, with Midcontinent ISO also serving some areas.
In Kansas, where Evergy (EVRG) is among the major electricity service providers, a warning for fire weather conditions was raised for Phillipsburg and Hill City.
Areas placed under a red flag warning in South Dakota included Yankton, Vermillion, Lake Andes, Michelle, Chamberlain, Sioux Falls, Brookings, Huron, Mobridge, Aberdeen, Sisseton, Redfield, Miller, Pierre, and Murdo. Xcel Energy, Northwestern Energy (NWE), Black Hills Energy, MDU Resources (MDU) unit Montana-Dakota Utilities and Otter Tail's (OTTR) Otter Tail Power are among the major electric service providers in the state.
A red flag warning was also issued for North Dakota's Bottineau, Minot, Rugby, Ashley, Bismarck, Jamestown, Harvey, Devil's Lake, Fargo, and Lisbon. The state is primarily served by Xcel Energy, Montana-Dakota Utilities, and Otter Tail Power.
In Minnesota, a similar warning was raised for Marshall, Pipestone, Windom, Worthington, Morris, Willmar, and Mankato. The main service providers in the state are Otter Tail Power, Allette (ALE) subsidiary Minnesota Power, Xcel Energy and Alliant Energy (LNT).
Also covered under a red flag warning watch were Iowa's Spencer, Storm Lake, and Sioux City, primarily served by Berkshire Hathaway Energy unit MidAmerican Energy and Alliant Energy.
Meanwhile, an extreme heat warning was issued for Gila Bend in Arizona.
The NWS issued a freeze warning for Michigan's Petoskey, Manistee, Tawas City, Rogers City, Gaylord, Alpena, Mio, Houghton Lake, Cadillac, Ludington, Pentwater, Big Rapids, Mount Pleasant, Saginaw, Bad Axe, and Port Huron. These places are primarily served by CMS Energy (CMS) unit Consumers Energy and DTE Energy (DTE).
In New York, a freeze warning was issued for Jamestown, Wellsville, Elmira, Ithaca, Buffalo, Niagara Falls, Dunsville, Fulton, Watertown, Utica, Binghamton, Monticello, Oneonta, Hunter, Herkimer, Ogdensberg, Massena, Malone, and Old Forge. National Grid (NGG), Avangrid (AGR) unit New York State Electric & Gas, and Fortis subsidiary Central Hudson Gas & Electric are the major service providers in these areas.
Also covered under a freeze warning watching were Pennsylvania's Erie, Meadville, Bradford, Dubois, Johnstown, Altoona, Lockhaven, Williamsport, Butler, Clarion, and Indiana. The state is primarily served by Exelon (EXC) unit PECO Energy, PPL (PPL) subsidiary PPL Electric Utilities, Duquesne Light Company and FirstEnergy (FE) through its various subsidiaries.
A freeze warning was also issued for Ashtabula and Youngstown in Ohio; Bennington, Rutland, Springfield, Burlington, and Montpelier in Vermont; Lebanon in New Hampshire; Oakland and Cumberland in Maryland; Monterey in Virginia; and Elins and Snowshoe in West Virginia.
The NWS also issued flood warnings for small pockets of Texas, Missouri, Louisiana, Mississippi, and Washington.