The death toll climbed to at least five.
A day after Florence blew ashore in North Carolina with 90 mph (145 kph) winds, Coast Guard officials reported using helicopters to lift scores of people from rooftops and swamped cars near the shoreline, and rescue crews used inflatable boats to reach others trapped in their submerged homes.
More than 2 feet of rain had fallen in places, and the drenching went on and on, with forecasters saying there could be an additional 1½ feet by the end of the weekend.
Rivers and creeks rose toward record levels, threatening flash flooding that could devastate communities and endanger dams, roads and bridges.
“I cannot overstate it: Floodwaters are rising, and if you aren’t watching for them you are risking your life,” Gov. Roy Cooper said.
As of 2 p.m., Florence was centered about 50 miles (85 kilometers) west of Myrtle Beach, South Carolina, inching west at 3 mph (6 kph) — about as fast as a person walks. Its winds were down to 45 mph (75 kph). With half of the storm still out over the Atlantic, Florence continued to collect warm ocean water and dump it on land.
In its initial onslaught along the coast, Florence buckled buildings, deluged entire communities and knocked out power to more than 900,000 homes and businesses. But the storm was shaping up as a two-part disaster, with the second, delayed-action stage consisting of epic inland flooding, caused by rainwater working its way into rivers and streams.
Authorities ordered an immediate evacuation of an estimated 2,800 homes within a mile of a stretch of the Cape Fear River, plus a section of the Little River, because of what they said was imminent danger from floodwaters. The evacuation zone included part of the city of Fayetteville, with a population of 200,000.
Officials in North Carolina’s Harnett County, about 90 miles inland, urged residents of about 1,100 homes to clear out because the Lower Little River was rising toward record levels.
In New Bern, along the coast, homes were completely surrounded by water, and rescuers used inflatable boats to reach people. More than 360 people had been carried to safety since Thursday night.
Kevin Knox and his family were rescued from their flooded brick home with the help of Army Sgt. Johan Mackie, part of a team that was using a phone app to locate people in distress. Mackie rode in a boat through a flooded neighborhood, navigating through trees and past a fencepost to get to the Knox house.
“Amazing. They did awesome,” said Knox, who was stranded with seven others, including a boy who was carried out in a life vest. “If not we’d be stuck upstairs for the next … how long? I have no idea.”
Across the Trent River from New Bern, Jerry and Jan Andrews returned home after evacuating to find carp flopping in their backyard near the porch stairs.
Across the street, Coast Guard helicopters were taking off to rescue stranded people. Coast Guardsmen said choppers had made about 50 rescues in and around New Bern and Jacksonville as of noon.
Along the Lumber River in Lumberton, workers used heavy machinery to dump extra sand on a railbed prone to flooding. Flooding forced the shutdown of a 16-mile (26-kilometer) stretch of Interstate 95, the main highway along the Eastern Seaboard.
The dead included a mother and baby killed when a tree fell on a house in Wilmington, North Carolina. South Carolina recorded its first death from the storm when officials said a 61-year-old woman was killed when her vehicle hit a tree that had fallen across a highway.
The National Hurricane Center said Florence broke a North Carolina rainfall record that had stood for almost 20 years: Preliminary reports showed Swansboro got over 30 inches and counting, eclipsing the mark set in 1999, when Hurricane Floyd dropped just over 24 inches on the state.
As of noon, Emerald Isle had over 23 inches of rain, and Wilmington and Goldsboro had about a foot. North Myrtle Beach, South Carolina, had around 7 inches.
Stream gauges across the region showed water levels steadily rising, with forecasts calling for rivers to crest Sunday and Monday at or near record levels. The Little River, the Cape Fear, the Lumber, the Neuse, the Waccamaw and the Pee Dee were all projected to rise over their banks, flooding cities and towns.
The storm interrupted a September rite in the South: college football. Schools canceled, postponed, switched sites or changed kickoff times because of Florence. No. 2 Clemson and Georgia Southern had sunny skies and unseasonably mild weather for the only major conference game being played in the Carolinas and Virginia.
The hurricane center said the storm will eventually break up over the southern Appalachians and make a sharp rightward swing to the northeast, its rainy remnants moving into the mid-Atlantic states and New England by the middle of next week.
North Carolina alone is forecast to get 9.6 trillion gallons (36 trillion liters), enough to cover the Tar Heel state to a depth of about 10 inches (25 centimeters).
AP writers Jonathan Drew in Wilmington; Jeffrey Collins in Fork, South Carolina; Emery P. Dalesio in New Bern; Denise Lavoie and Sarah Rankin in Richmond, Virginia; Gary Robertson in Raleigh, North Carolina; Meg Kinnard in Columbia, South Carolina; Seth Borenstein and Michael Biesecker in Washington; Martha Waggoner in Raleigh, North Carolina; Jennifer Kay in Miami; Russ Bynum in Columbia, South Carolina; Pete Iacobelli in Clemson, South Carolina, and Jay Reeves in Atlanta contributed to this report.