Tropical storm Debby made landfall Monday as a Category 1 hurricane in one of the least populated areas of Florida. The storm weakened into a tropical storm late Monday morning, with top winds hovering about 70 mph. The storm was moving slowly to the north-northeast, and was expected to decrease in speed as it turns to the east. Forecasters warned heavy rain could spawn catastrophic flooding in Florida, South Carolina and Georgia. More than 350,000 customers were without power in Florida and Georgia on Monday, according to PowerOutage.com.

Here’s the latestVice President Harris postpones trip to GeorgiaVice President Kamala Harris postponed a scheduled trip to Georgia amid the ongoing effects of Tropical Storm Debby.

Harris’ campaign said her stop planned in Savannah, Georgia, on Thursday, was being put off due to the storm.

Harris is choosing her running mate and will introduce the choice during a rally in Philadelphia on Tuesday. The pair will then travel together starting on Wednesday to a series of key battleground states: Wisconsin, Michigan, North Carolina, Arizona and Nevada. But the Georgia leg of the original journey has been canceled for now.

Debby was expected to bring potentially record-setting rainfall to Georgia and South Carolina as it heads east.

Debby forces flight cancellations at Florida airportsMore than 1,600 flights were canceled nationwide by midday Monday, many of them to and from Florida airports, according to FlightAware.com. One out of every five flights scheduled to leave Orlando International Airport was canceled Monday, with just as many incoming flights canceled there.

Nearly 30 percent of flights scheduled to depart Tampa International Airport on Monday were canceled. High numbers of canceled flights were also reported at airports in Jacksonville and Fort Myers.

Biden briefed on Debby’s progressPresident Joe Biden was briefed on Debby’s progress while at his home in Wilmington, Delaware, the White House said Monday.

The White House said Biden on Saturday approved Florida’s request for an emergency declaration and that federal rescue personnel, meals and water have been deployed to the storm-stricken region. The administration is closely monitoring the storm and response effort with state and local officials, it said.

A 13-year-old boy dies when tree falls on mobile home in Florida, and officials report other deaths in stormA 13-year-old boy died Monday morning after a tree fell on a mobile home located southwest of Gainesville, Florida, according to the Levy County Sheriff’s Office.

Officials reported other deaths as Debby moved inland.

A truck driver died early Monday on Interstate 75 in the Tampa area after he lost control of his tractor trailer, which flipped over a concrete wall and dangled over water before the cab dropped into the water below.

East of Steinhatchee, a tiny community in northern Florida near where the storm made landfall, a 38-year-old woman and a 12-year-old boy were killed late Sunday when the car she was driving on a wet road struck a median and then overturned off the road. A 14-year-old boy who was a passenger was hospitalized with serious injuries, according to the Florida Highway Patrol.

Debby weakens to a tropical storm but flooding threat continuesDebby had weakened Monday into a tropical storm with top winds hovering around 70 mph. The National Hurricane Center in Miami said the storm was moving slowly to the north-northeast, and was expected to decrease in speed as it turns to the east. Debby made landfall as a hurricane in the Big Bend region of Florida, one of the state’s least populated areas.

Forecasters are still warning that heavy rain could spawn catastrophic flooding in Florida, South Carolina and Georgia.

Big worry is storm surge from DebbyForecasters said storm surge was expected to be the biggest threat for Florida, with 6 to 10 feet of inundation above ground level predicted in part of the zone near the Big Bend.

“That part of the coast is a very vulnerable spot,” John Cangialosi, a hurricane specialist with the National Hurricane Center, said Monday. Some areas, including Sarasota and Manatee counties, have already received 10 to 12 inches of rain.

In Georgia, the National Weather Service is predicting major flooding on some rivers: the Canoochee River near Claxton, the Ohoopee River near Reidsville and the Ogeechee River near Eden. All those rivers were below flood stage Monday but could see their water levels more than double by later in the week.

Hundreds of thousands without powerMore than 350,000 customers were without power in Florida and Georgia on Monday, according to PowerOutage.com.

Florida Gov. Ron DeSantis said some 17,000 linemen are working to restore electricity. He warned residents in affected areas to sit tight until conditions are safe.

“When the water rises, when you have streets that can be flooded, that’s hazardous,” DeSantis said. “Don’t try to drive through this. We don’t want to see traffic fatalities adding up. Don’t tempt fate, don’t try to go through these flooded streets.”