St PETERSBURG: Hurricane Ian carved a path of destruction across Florida, trapping people in flooded homes, cutting off the only bridge to a barrier island, destroying a historic waterfront pier and knocking out power to 2.5 million people as it dumped rain over a huge area on Thursday.
Catastrophic flooding was threatened around the state as one of the strongest hurricanes to ever hit the United States crossed the peninsula.
Ian's tropical storm-force winds extended outward up to 415 miles (665 km), drenching much of Florida and the southeastern Atlantic coast.
"It crushed us," Lee County Sheriff Carmine Marceno told ABC's "Good Morning America".
He said roads and bridges remained impassable, stranding thousands in the county where Ian made landfall just north of Fort Myers. "We still cannot access many of the people that are in need."
Authorities confirmed at least one storm death. In Florida a 72-year-old man in Deltona fell into a canal while using a hose to drain his pool in the heavy rain, the Volusia County Sheriff's Office said.
Two people died in Cuba after Ian struck there. Marceno said that while he lacked any details, he believed the death toll would be "in the hundreds".
Gov Ron DeSantis later said that toll was not confirmed and was likely an estimate based on 911 calls.
President Joe Biden formally issued a disaster declaration on Thursday, and Deanne Criswell, the administrator of the Federal Emergency Management Agency, said the agency is supporting search and rescue efforts.
The US Coast Guard also began rescues on southwest Florida's barrier islands early on Thursday, as soon as winds died down, DeSantis said.
"The Coast Guard had people who were in their attics and got saved off their rooftops," DeSantis said.
"We've never seen a storm surge of this magnitude. The amount of water that's been rising, and will likely continue to rise today even as the storm is passing, is basically a 500-year flooding event."
A chunk of the Sanibel Causeway fell into the sea, cutting off access to the barrier island where 6,300 people normally live.
How many heeded mandatory evacuation orders before the storm surge washed over the island wasn't known.
South of Sanibel, towering waves destroyed the historic beachfront pier in Naples, tearing out even the pilings underneath.
"Right now, there is no pier," said Penny Taylor, a commissioner in Collier County, which includes Naples.
Emergency crews sawed through toppled trees to reach flooded homes, but with no electricity and virtually no cell service, it was impossible for many people to call for help when the surge filled their living rooms.
"Portable towers are on the way for cell service. Chances are your loved ones do not have ability to contact you," said the sheriff's office in Collier County. "We can tell you as daylight reveals the aftermath, it's going to be a hard day."
In Fort Myers, Valerie Bartley was terrified as her family spent desperate hours holding a dining room table against their patio door as debris slammed into their house.
"We just assumed that it was tearing our house apart," she said.
As the storm raged outside, she said her 4-year-old daughter grabbed her hand and said: "I'm scared too, but it's going to be OK."
Ian made landfall on Wednesday near Cayo Costa, a barrier island just west of heavily populated Fort Myers, as a Category 4 hurricane with 150 mph (241 kph) winds, tying it for the fifth-strongest hurricane, when measured by wind speed, ever to strike the US.
Ian's centre came ashore more than 100 miles (160 kilometres) south of Tampa and St.Petersburg, sparing them their first direct hit by a major hurricane since 1921. Water drained from Tampa Bay as it approached, then returned with a surge.
The National Hurricane Centre said Ian was expected to regain near-hurricane strength after emerging over Atlantic waters near the Kennedy Space Centre, with South Carolina in its sights for a second US landfall.
Meanwhile, a stretch of the state remained under as much as 10 feet of water on Thursday morning, with destructive waves "ongoing along the southwest Florida coastline from Englewood to Bonita Beach, including Charlotte Harbour," the centre said.
In Port Charlotte, a hospital's emergency room flooded and fierce winds ripped away part of the roof, sending water gushing down into the intensive care unit.
The sickest patients -- some on ventilators --were crowded into the middle two floors as the staff prepared for storm victims to arrive, said Dr Birgit Bodine of HCA Florida Fawcett Hospital.
The Florida Highway Patrol shut down the Florida Turnpike in the Orlando area due to significant flooding and said the main artery in the middle of the state will remain closed until the water subsides.
Calls from people trapped in flooded homes or from worried relatives flooded 911 lines. Pleas were also posted on social media sites, some with videos showing debris-covered water sloshing toward the eaves of their homes.
Brittany Hailer, a journalist in Pittsburgh, contacted rescuers about her mother in North Fort Myers, whose home was swamped by 5 feet (1.5 metres) of water.
"We don't know when the water's going to go down. We don't know how they're going to leave, their cars are totalled," Hailer said. "Her only way out is on a boat."
Another boat, carrying Cuban migrants, sank on Wednesday in stormy weather east of Key West.
The US Coast Guard initiated a search and rescue mission for 23 people and managed to find three survivors about two miles (three kilometres) south of the Florida Keys, officials said.
Four other Cubans swam to Stock Island, just east of Key West, the US Border Patrol said. Aircrews continued to search for possibly 20 remaining migrants. The storm previously killed two people in Cuba, and brought down the country's electrical grid.
More than 2.5 million Florida homes and businesses were left without electricity, according to the PowerOutage.us site. Most of the homes and businesses in 12 counties were without power.
Sheriff Bull Prummell of Charlotte County, just north of Fort Myers, announced a curfew between 9 pm and 6 am "for life-saving purposes", saying violators may face second-degree misdemeanour charges.
"I am enacting this curfew as a means of protecting the people and property of Charlotte County," Prummell said.
At 8 am on Thursday, the storm was about 40 miles (70 km) east of Orlando and 10 miles (15 kilometres) southwest of Cape Canaveral, carrying maximum sustained winds of 65 mph (100 kph) and moving toward the cape at 8 mph (13 kmh), the centre said.
Up to a foot (30 centimetres) of rain is forecast for parts of Northeast Florida, coastal Georgia and the Lowcountry of South Carolina.
As much as 6 inches (15 centimetres) could fall in southern Virginia as the storm moves inland over the Carolinas, and the centre said landslides were possible in the southern Appalachian mountains.
The governors of South Carolina, North Carolina, Georgia and Virginia all preemptively declared states of emergency.