The US National Weather Service said the presence of dry and breezy conditions will lead to elevated fire weather conditions across the Four Corners Region through Friday.
Meanwhile, the Northwest and Southern US regions are expected to experience persistent widespread showers and thunderstorms through the end of the week, the agency said.
The NWS issued a red flag warning for Arizona's Kayenta, Page, Chinle, Flagstaff, Winslow, Show Low, St Johns, and areas near Grand Canyon Village, primarily served by Pinnacle West Capital (PNW) subsidiary Arizona Public Service.
A similar warning was raised for New Mexico's Socorro, Glenwood, Farmington, Grants, Gallup, and parts of Chama and Albuquerque. TXNM Energy (TXNM) unit Public Service Co. of New Mexico and Xcel Energy (XEL) are among the primary electricity suppliers in the state.
Colorado's Cortez, Nucla, Montrose, and Durango were also placed under a red flag warning. Xcel Energy and Black Hills (BKH) unit Black Hills Energy are the primary electricity providers in the state.
In Utah, a red flag warning was raised for Bluff, Blanding, Monticello, Moab, Vernal, Green River and parts of Capitol Reef National Park. PacifiCorp's Rocky Mountain Power is the primary service provider in the state.
The NWS issued a flood warning for Mississippi's Hattiesburg, Gulfport, and areas near Meridian and Columbus. The state is primarily served by Entergy (ETR) and Southern Co.'s (SO) Mississippi units.
The NWS also issued flood warnings for certain pockets of Oklahoma, Louisiana, Alabama, Indiana, and Ohio.