Tropical Storm Debby live updates: 1 killed after storm makes landfall as hurricane

Debby is roaring across Florida as a tropical storm after making landfall as a Category 1 hurricane Monday morning.

At least one person has been killed.

Latest Developments

_{Aug 5, 11:40 AM}

More than 300,000 customers without power in Florida

More than 300,000 customers are without power in Florida Monday morning, according to PowerOutage.us , which tracks energy outages.

_{Aug 5, 11:41 AM}

Debby weakens to tropical storm

Debby, which made landfall in Florida as a Category 1 hurricane Monday morning, weakened to a tropical storm just before 11 a.m. ET.

Debby is barreling north with winds of 70 mph.

The storm is forecast to cause major flooding across the Southeast this week.

Rain totals have reached 19 inches in Florida so far.

In South Carolina, the rain total could topple the state’s all-time precipitation record for a tropical cyclone: 23.63 inches from Hurricane Florence in 2018.

Some of the heavy rain will make its way into Virginia by Friday and possibly to the coastal Mid-Atlantic by the weekend.

_{Aug 5, 10:54 AM}

13-year-old boy killed by fallen tree

A 13-year-old boy was killed when a tree fell on a mobile home Monday morning in Levy County, Florida, which encompasses Cedar Key, according to the Levy County Sheriff’s Office.

"Our thoughts and prayers are with this family as they deal with this tragedy," the sheriff’s office said in a statement. "We encourage everyone to use extreme caution as they begin to assess and clean up the damage. Downed powerlines and falling trees are among the many hazards."

_{Aug 5, 10:26 AM}

More than 1,500 flights canceled

More than 1,500 flights have been canceled within, into or out of the U.S. on Monday, and that number is expected to continue to climb.

American Airlines is seeing the biggest impacts because of its hubs in Miami and Charlotte, North Carolina.

American Airlines said it canceled operations at airports in Gainesville, Sarasota and Tallahassee until noon on Monday.

Sunday was one of the worst air travel days of the year with more than 2,400 cancellations.

_{Aug 5, 9:03 AM}

Debby tracker, maps: Latest storm path

On Monday, Debby will bring very heavy rain from Gainesville and Jacksonville, Florida, up to Savannah, Georgia, where more than 20 inches of rain is possible.

By Tuesday, Debby is expected to stall over the Southeast, bringing potentially historic rainfall to Georgia and South Carolina. Up to 30 inches of rain is possible through Thursday.

Click here to read more.

_{Aug 5, 8:20 AM}

Storm surge, flooding major threats

Storm surge and flooding are major threats to Florida as Hurricane Debby slams the state, Gov. Ron DeSantis warned Monday.

Significant flooding has already impacted the Bradenton and Sarasota County area up to North Florida, he said.

The National Guard and Florida Highway Patrol are on standby, DeSantis said.

-ABC News’ Victoria Arancio

_{Aug 5, 7:09 AM}

Debby makes landfall in Florida

Hurricane Debby made landfall near Steinhatchee, Florida, on Monday morning, the National Hurricane Center said.

-ABC News’ Max Golembo

_{Aug 5, 5:20 AM}

Debby approaches landfall with 80 mph winds

Hurricane Debby is "very near" landfall along Florida's Gulf Coast, the National Hurricane Center said at 5 a.m. ET.

"Expected to bring life-threatening storm surge in portions of Florida and major flooding in the southeastern United States," the center said in an update.

The Category 1 storm had maximum sustained winds of an about 80 mph as it approached Big Bend, a northern area near the Panhandle, the center said.

-ABC News' Max Golembo and Kevin Shalvey

_{Aug 5, 2:45 AM}

Debby strengthens, with maximum sustained winds up to 80 mph

Hurricane Debby continued to strengthen, with maximum sustained winds rising to 80 mph, making it a Category 1 hurricane, according to the National Hurricane Center.

More than 10 inches of rain fell on the west coast of Florida, around the Tampa Bay area, where water rescues have been on going near Clearwater. Significant flooding also has been reported in Fort Myers area.

Storm surge has been rising quickly now along the Big Bend area in Florida, from Cedar Key to Keaton Beach, where up to 10 feet of Gulf water could inundate the coastline. The storm is forecast to make landfall in that area on Monday morning.

-ABC News' Max Golembo

_{Aug 5, 2:21 AM}

Coast Guard rescues 2 adrift in sailboat off Florida coast

Two people were rescued Sunday from a boat that was adrift in about 20-foot seas off the coast of Boca Grande, Florida, the U.S. Coast Guard said.

The boaters were airlifted from their 34-foot sailboat after the vessel lost its sail about 73 miles off shore, the guard said.

The sailboat had been on course for Tarpon Springs from Key West, officials said. A friend of the boaters contacted to the Coast Guard at about 5 p.m. Saturday, telling officials they had missed their check-in.

"We received an updated satellite position from the boaters' friend, which led to them being successfully located," Lt. Cmdr. Christopher Hooper, a search and rescue mission coordinator, said in a statement.

The boaters were rescued by a crew on an Air Station Clearwater MH-60 Jayhawk helicopter at about 11 a.m. on Sunday, the Coast Guard said. They had been adrift in seas that were between 15 and 20 feet, with wind speeds at about 50 knots. Visibility was low.

The names of the people on the boat were not released.

-ABC News' Victoria Arancio

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