A heat wave could cause tens of thousands of people to evacuate the Sunshine State from Sunday night into Monday morning, the state’s Office of Emergency Management said.

The department warned residents to prepare for “dangerous heat conditions” and urged people to check on loved ones in their homes.

Residents in southern Florida are being urged to leave the state or be “prepared to evacuate” if temperatures reach 100 degrees Fahrenheit or more, according to a statement from the office.

A man is helped after being caught in a high surf near Lake Okeechobee, Florida, February 8, 2020.

The heat wave comes as the U.S. is battling the worst of the El Nino weather pattern, which has been causing the region to cool.

The storm is expected to continue over the weekend, with temperatures falling into the low 80s, with the heaviest rainfall expected in Florida on Sunday night.

Tropical Storm Cindy is forecast to be the most powerful storm in Florida since it was a Category 1 storm in September of last year.

It’s expected to bring strong winds, heavy rain and possibly flooding.

The Florida Keys have been flooded with a record number of 1,600 people, according the Florida Department of Environmental Protection.

The agency said on Friday that some 6,000 residents were evacuated as a precaution.