Officials at Yellowstone National Park said in a statement Monday that rangers closed all entrances to Yellowstone National Park due to flooding, mudslides, rockslides and extremely hazardous conditions that caused bridge failures along with other issues. The dismal conditions for the nation's most prominent park come as a large portion of the U.S. has seen record-setting heat.

“We will not know timing of the park’s reopening until flood waters subside and we're able to assess the damage throughout the park,” said superintendent Cam Sholly in the statement.

The rain and flooding conditions have left some nearby residents without water and power. The county and the state are working together with the park to provide support

Over the weekend, a record-breaking heat wave hit parts of the U.S. southwest. Cities and areas that saw record temperatures included Phoenix, Las Vegas, Denver, California’s Death Valley and parts of Texas.

The heatwave is now headed east as there will be a “heat advisory” for Arkansas, Mississippi, Kentucky, Alabama, Missouri, Tennessee, Iowa, Illinois, and more. Parts of Indiana, Ohio, and Michigan are under an “excessive heat” warning, National Weather Service reported on Monday.

The NWS forecasts that temperatures could reach record-breaking numbers in “more than 100 cities” through Wednesday from Denver to Charleston, South Carolina.

Wildfires were reported to have been blazing in California, New Mexico and Arizona over the weekend while continuing into Monday. The cities affected have been under evacuation orders.

The NWS has now issued red flag warnings for high fire danger in central and southern parts of Colorado as well as parts of Arizona, New Mexico and Utah.

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