Tropical Storm Debby live updates: Four killed, including two kids, as storm slams Florida

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

A hurricane warning was issued for Florida's Big Bend area, from near Cedar Key to Apalachicola.

Here's how the news is developing:

Tropical Storm Debby slowing down as it moves across US

Tropical Storm Debby continues to weaken and slow down in forward speed as the center moves near the Florida-Georgia state line as of 5 p.m. ET.

Maximum sustained winds are down to 50 mph, and Debby is moving to the northeast at 6 mph. The center is currently about 30 miles southeast of Valdosta, Georgia.

As of Monday afternoon, all tropical weather and storm surge alerts have been canceled across Florida's Gulf Coast as conditions improve across much of the state.

Debby will move across southeastern Georgia through Monday evening, with the worst impacts focused there and into the Jacksonville, Florida, area. Heavy rain continues to overspread southern South Carolina as well.

-ABC News meteorologist Daniel Peck

More than 199,000 customers without power in Florida

More than 199,000 customers are without power in Florida, according to PowerOutage.us, which tracks energy outages.

Latest forecast

Debby is moving inland across north Florida Monday afternoon after dumping more than 1 foot of rain in the state.

Tornadoes are possible Monday afternoon in Florida, including in Tampa, Orlando and Jacksonville, as well as in the coastal cities of Savannah, Georgia, and Beaufort, South Carolina.

The biggest concern this week is flash flooding from the widespread, relentless rain. A flash flood emergency remains in effect in Suwannee County, Florida, northwest of Gainesville, where 10 to 15 inches of rain has fallen so far.

Debby will slowly churn into southeastern Georgia throughout Monday afternoon and evening. Conditions will deteriorate in Savannah, Georgia, throughout the day.

-ABC News’ Dan Peck

4 killed including 2 kids

At least four people have been killed from Debby, authorities said.

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."

In Hillsborough County, Florida, which encompasses Tampa, a driver of a semi was killed when the truck went into a canal off Interstate 275 Monday morning, according to the Hillsborough County Sheriff's Office.

Deputies recovered the semi and found the driver dead inside the cab, authorities said.

"It’s just heartbreaking," Tampa Mayor Jane Castor told ABC News Live. "We really ask everyone, one, to be aware of the weather situations in your area, and then heed the warnings. Especially the high wind and the water."

In Dixie County, Florida, a driver “lost control due to the inclement weather and wet roadway” on Sunday night, crashing into the center median guardrail and then overturning the car, the Florida Highway Patrol said.

The driver, a 38-year-old woman, and a passenger, a 12-year-old boy, were killed, authorities said.

Another passenger, a 14-year-old boy, was seriously injured, the highway patrol said.

Flash flood emergency issued in Suwannee County, Florida

A flash flood emergency has been issued in Suwannee County in north Florida, northwest of Gainesville, where officials are reporting that water is entering structures.

Ten to 15 inches of rain has inundated the county so far and another 3 to 6 inches of rain is expected.

-ABC News’ Dan Peck

More than 1,600 flights canceled

More than 1,600 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.

Biden briefed on storm

President Joe Biden was briefed Monday morning on the administration’s ongoing response to Debby, according to a White House official.

On Saturday, Biden approved Florida’s request for an emergency declaration and deployed rescue personnel, meals and water, the official said.

The Biden administration is in touch with officials from Florida, Georgia and South Carolina. The Federal Emergency Management Agency has deployed staff to Florida, Georgia, South Carolina and North Carolina as the storm moves north, the official said.

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.

More than 1,200 flights canceled

More than 1,200 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.

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

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.

More than 250,000 customers without power in Florida

More than 250,000 customers are without power in Florida Monday morning, according to PowerOutage.us, which tracks energy outages.

Debby makes landfall in Florida

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

More than 135,000 customers without power in Florida, tracker says

More than 135,000 customers were without power in Florida early Monday, according to PowerOutage.us, which tracks energy outages.

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.

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.

Coast Guard rescues two 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 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.

Debby strengthens into a hurricane

The National Hurricane Center has upgraded Tropical Storm Debby to a Category 1 hurricane with winds of 75 mph.

The forecast is still on track for more strengthening overnight as Debby feeds off the warm water in the eastern Gulf of Mexico. Water temperatures running 3 to 5 degrees above average are providing plenty of fuel for this storm to intensify before landfall, which will happen around 7 a.m. ET along the Big Bend region of Florida.

Tropical Storm Debby nearing hurricane strength at 70 mph

While still a tropical storm, Debby is nearing hurricane strength, producing maximum sustained wind speeds up to 70 mph.

Debby will continue to intensify rapidly overnight as it travels northward over the Gulf's warm waters. It is forecast to become a hurricane tonight. It is expected to strengthen to at least a strong Category 1 hurricane before making landfall along Florida's Big Bend region Monday morning (around 7 a.m. ET), producing sustained wind speeds near 85 mph and wind gusts reaching over 100 mph possible.

Located about 90 miles southwest of Cedar Key, Florida, the storm continues to impact the Florida Gulf Coast with heavy rainfall, storm surge, powerful winds and even spin-up tornadoes.

A reported wind gust of 56 mph was reported in St. Petersburg, with two tornadoes reported in central Florida.

A 60-mph wind gust was also reported near Sarasota, Florida.

Numerous reports of flooding from heavy rainfall and surges have also been submitted up Florida's Gulf Coast.

The Tornado Watch covering much of northern and central Florida and southern Georgia has been extended until 6 a.m. ET on Monday.

Once Debby moves over land, it will weaken. However, the lack of a steering current will cause the storm to slow down considerably. While its exact track remains questionable, model guidance suggests the storm will drift over the Atlantic or Southeast coastline late Monday night into Tuesday before meandering back over Georgia and the Carolinas. Interaction with the Atlantic could reenergize Debby, but that will greatly depend on the storm's path.

Even though Debby's track and timing remain uncertain later this week, there is high confidence that it will bring historic rainfall and significant flooding across portions of the Southeast.

Rainfall ranging between 6 to 12 inches is possible from Florida's Big Bend region through southeastern Georgia and into the Carolinas. Parts of coastal Georgia and South Carolina will be in the bullseye for the heaviest rainfall. There, widespread totals between 10 to 20 inches are possible, with some places even seeing up to 30 inches locally. Because of this, significant urban and river flooding is anticipated.

Rainfall aside, hurricane and tropical storm force winds will continue to whip across Florida and will likely intensify Sunday night into Monday as the storm moves closer to the coast -- with areas just south and east of the storm's eyewall seeing the strongest gusts early Monday morning.

Storm surge will also worsen along Florida's northern and central Gulf coast tonight into Monday morning, with the highest surge expected between Suwannee River and Ochlockonee River (6 to 10 feet).

All tropical alerts remain unchanged from the last update.

Tropical Storm Debby on track to become a hurricane overnight

As of 5 p.m. ET on Sunday, Tropical Storm Debby still has winds of 65 mph and is forecast to undergo rapid intensification into a hurricane overnight, according to the National Hurricane Center.

Debby is expected to make landfall as a hurricane in Florida’s Big Bend region on Monday morning around 7 a.m.

Rain is expected to be the most impactful element from this storm, affecting a wide area over an extended period of time.

"Across portions of southeast Georgia and South Carolina, 10 to 20 inches of rainfall, with local amounts to 30 inches, are expected through Friday morning," the National Hurricane Center said. "This potentially historic rainfall will likely result in areas of catastrophic flooding."

Evacuations ordered in Alachua County, Florida, as Debby set to make landfall

An evacuation order was issued Sunday for residents of Alachua County, Florida, residing in mobile homes, manufactured homes and recreational vehicles ahead of the arrival of Debby, which is forecast to be a hurricane when it makes landfall on Monday.

People living in areas close to rivers and lakes, and low-lying areas that tend to flood in Alachua County are also encouraged to evacuate, according to a statement issued by county officials.

Gainesville is the largest city in Alachua County.

"We encourage residents affected to find alternative housing with friends, family or short-term rentals," according to the county's statement.

Alachua County is opening three shelters for residents in need.

Tornado watch issued as Debby runs parallel to Florida's Gulf Coast

A tornado watch was issued Sunday afternoon by the National Weather Service as Tropical Storm Debbie moved northward in the Gulf of Mexico parallel to Florida's Gulf Coast.

At 2 p.m. Sunday, the National Hurricane Center said Debby was still a tropical storm with winds of 65 mph and forecasted to bring severe weather, including heavy rain, to coastal communities Sunday afternoon.

A tornado watch is in effect for much of Florida through Sunday evening.

Debby is expected to become a hurricane Sunday evening and will likely make landfall sometime between 7 a.m. and 8 a.m. Monday in the Big Bend area of Florida's Panhandle.

Once Debby makes landfall, the storm is expected to slow down and essentially stall over the Southeast, dropping potentially historic amounts of rainfall as it moves into Georgia and South Carolina.

A hurricane warning is in effect for the west coast of Florida from the Ochlockonee River southwest of Tallahassee to the Suwannee River northwest of Gainesville.

More than 1,600 flights canceled due to Debby and Northeast thunderstorms

Tropical Storm Debby and thunderstorms in the Northeast were causing airlines to cancel or delay flights on Sunday.

American Airlines said it canceled 601 flights, or about 16% of its flights, on Sunday, the most of any airline.

Debby, now a tropical storm in the Gulf of Mexico, is expected to make landfall around the Big Bend area of the Florida Panhandle on Monday morning as a Category 1 hurricane.

Also causing delays and cancellations were severe thunderstorms moving up the East Coast. Parts of the mid-Atlantic states are under a severe thunderstorm watch until 9 p.m. ET Sunday, including the cities of Washington, D.C., Baltimore, Philadelphia, and New York City.

The most flights canceled on Sunday were at Charlotte Douglas International Airport, where 214 flights were canceled and another 172 were delayed, according to FlightAware.

In New York City, LaGuardia and John F. Kennedy international airports reported a combined 363 flights canceled and 258 delayed on Sunday.

Miami International Airport reported 209 canceled flights and 151 delayed fights. Airports in Orlando, Tampa, Philadelphia, Newark, Washington, D.C., and Dallas-Fort Worth all reported more than 100 flight cancellations on Sunday.

Ten million people under tropical storm alert on Florida's Gulf Coast

About 10 million people along Florida's west coast and up through Georgia and South and North Carolina were under a tropical storm alert Sunday as Debby took aim at the area and is forecast to make landfall in the Panhandle region on Monday.

Debby, now a tropical storm in the Gulf of Mexico about 190 miles southwest of Tampa, is expected to make landfall sometime between 7 and 8 a.m. in Big Bend on the Florida Panhandle as a Category 1 hurricane, state emergency officials said.

Debby is expected to create a storm surge of 4 to 7 feet in Cedar Key and Crystal River on the Florida west coast and a 2- to 5-foot storm surge farther south in Tampa and Sarasota.

The storm is forecast to move into the cities of Tallahassee and Jacksonville, bringing up to 20 inches of rain to some parts, before causing potential flooding in Georgia and the Carolinas on Tuesday, Wednesday and Thursday.

National Guard put on alert for search and rescue: DeSantis

Members of the Florida National Guard have been advised to be prepared to conduct search-and-rescue missions once Tropical Storm Debby makes landfall on Monday, according to Florida Gov. Ron DeSantis.

Widespread flooding is expected for the Florida Panhandle region, particularly in the Big Bend area where Debby is expected to make landfall Monday morning as a category 1 hurricane, DeSantis said during a news conference Sunday morning.

DeSantis said the Florida National Guard and the state's Emergency Response Team are prepared to conduct search-and-rescue and provide humanitarian assistance.

"The Florida National Guard is standing by with 3,000 service members ready to assist the state Emergency Response Team, which includes search-and-rescue, route clearance, commodity distribution and protection of critical infrastructure," DeSantis said.

The governor said at least 12 swift boat crews and flat-bottom jon boat crews are also standing by to help with rescues.

He said that more than 30,000 bottles of water, more than 160,000 meals and nearly 14,000 tarps have been pre-staged in parts of Florida that are expected to be hit hard by the storm.

DeSantis said Florida utility companies have notified up to 17,000 linemen to be ready to spring into action once it is safe to repair any damage.

Flooding forecast as Debby expected to bring up to 20 inches of rain

Florida residents in the Big Bend region of the Panhandle were warned Sunday that Debby is going to bring "catastrophic rain to the area" that will cause flooding and power outages.

Kevin Guthrie, director of the Florida Division of Emergency Management, said during a news conference on Sunday that once the Debby makes landfall as a possible Category 1 hurricane on Monday morning, winds will subside quickly, but the slow-moving storm will produce an abundance of rain.

"We're going to be in a catastrophic rain situation where we have situations in Florida that will receive 15, maybe as high as 20 inches of rain," Guthrie said.

Florida Gov. Ron DeSantis told residents who are in the path of the storm to expect widespread power outages.

"It's possible that you could have serious intensification between now and landfall. It could get up to 85, 90 and 95 mph sustained winds. That is absolutely possible, particularly in parts of the state like here in Tallahassee. There's going to be a lot of trees that are going to fall down and you're going to have debris. You are going to have power interruptions," the governor said.

Gov. DeSantis advises residents to make final preparations for Debby

Florida Gov. Ron DeSantis advised residents of the state's Panhandle region on Sunday that they should be finalizing preparations for when Tropical Storm Debby makes its anticipated landfall Monday morning as a Category 1 hurricane.

"Now this is a storm that is potentially dangerous. Residents should be finalizing all of their preparations now," DeSantis said during a news conference at the state's Emergency Operation Center in Tallahassee.

DeSantis said Tropical Storm Debby was in the Gulf of Mexico about 190 miles southwest of Tampa as of Sunday morning with sustained winds of about 50 mph.

"But those are expected to increase," DeSantis said. "Tropical Storm Debby is likely to become a Category 1 hurricane before making landfall in the Big Bend region of Florida."

He said the storm was on a similar track taken by Hurricane Idalia in 2023. Idalia made landfall in Big Bend on Aug. 30, 2023, as a Category 3 hurricane and caused a devastating storm surge of 7 to 12 feet across the coastal Big Bend region in Levy, Dixie and Taylor counties.

"This storm is a similar track," DeSantis said. "It may be a tick to the west of that. It very well may have greater impacts here in the Tallahassee region than Hurricane Idalia did. Once it crosses landfall and enters the Florida Panhandle/Big Bend Region, wherever it does, it's going to move very slowly across northern Florida and southeast Georgia."