Dozens were missing in Lee County nearly a day after the twister struck, according to the sheriff, who said that crews had combed the hardest-hit areas but that other places had yet to be searched.

The winds Sunday afternoon obliterated numerous homes, leaving huge, jumbled piles of wood and household belongings. Some homes were reduced to concrete slabs. Debris was scattered across the countryside, with shredded metal hanging from the pine trees.

"I'm not going to be surprised if we don't come up with some more deceased. Hopefully we won't," Coroner Bill Harris said. He said the dead included almost entire families and at least three children, ages 6, 9 and 10.

A post on the Lee-Scott Academy's Facebook page said fourth-grader Taylor Thornton was among those killed.

On the day after the disaster, volunteers used chain saws to clear paths for emergency workers. Neighbors and friends helped one another find some of their belongings in the ruins.

Carol Dean found her wedding dress among the wreckage of her mobile home. But the storm took her 53-year-old husband. She said David Wayne Dean was at home Sunday afternoon and had texted a friend to beware when the tornado hit.

"He didn't make it out," she said.

Dean said she rushed home from her job at Walmart when she couldn't reach her husband on the phone. She pushed her way past sheriff's deputies who tried to keep her out of the damaged area. Her children had found David Dean's body in a neighbor's yard.

"They took me down to him," Dean said, "and I got to spend a little time with him before they took him away."

At the R&D Grocery, rattled residents asked one another if they were OK. And a big banner that read "#BEAUREGARDSTRONG" was hung on a fence at Beauregard High School.

The National Weather Service said one and possibly two tornadoes struck the area, with a powerful EF-4 twister with winds estimated at 170 mph (274 kph) blamed for most of the destruction. It carved a path nearly a mile (1.6 kilometers) wide and 24 miles (39 kilometers) long, said meteorologist Chris Darden.

Darden said the "monster tornado" was the deadliest twister to hit the U.S. since May 2013, when an EF-5 killed 24 people in Moore, Oklahoma.

"It looks like someone almost just took a giant knife and scraped the ground," Sheriff Jay Jones said.

County Emergency Management Director Kathy Carson said she was "pretty sure" that tornado sirens in Beauregard sounded warnings but that authorities were busy with the search-and-rescue and had not yet looked into the question.

Crews searching door-to-door used dogs as well as drones that can detect heat from a body. "We're basically using everything we can get our hands on," the sheriff said.

President Donald Trump tweeted that he told the Federal Emergency Management Agency to give Alabama "the A Plus treatment."

The twister was part of a powerful storm system that slashed its way across the Deep South, spawning numerous tornado warnings in Georgia, South Carolina and Florida.

"All we could do is just hold on for life and pray," said Jonathan Clardy, who huddled with his family inside their Beauregard trailer as the tornado ripped the roof off. "It's a blessing from God that me and my young'uns are alive."

Beauregard, named for a Confederate general, is an unincorporated community of roughly 10,000 people near the Georgia state line. The community is in the same county as Auburn University and has a few small stores, two schools and a volunteer fire department dotting the main highway.

"Everybody in Beauregard is a real close-knit family," Clardy said. "Everybody knows everybody around here. Everybody is heartbroken."

Julie Morrison and her daughter-in-law picked through the ruins of Morrison's home in Beauregard, looking for keys and a wallet. They managed to salvage her husband's motorcycle boots and a Bible.

Morrison said she and her husband took shelter in the bathtub as the twister lifted their house off the ground and swept it into the woods.

"We knew we were flying because it picked the house up," Morrison said, figuring that the shower's fiberglass enclosure helped them survive. She said her son-in-law later dug them out.

Along one hard-hit country road, giant pieces of metal from a farm building dangled from pine branches 20 feet (6 meters) in the air, making loud creaking sounds as the wind blew. For an entire mile down the road, pines were snapped in half. A mobile home crushed by two trees marked the end of the path of destruction.

An early March tornado outbreak in the Alabama-Mississippi area is not unusual, tornado experts said.

The weather service's Storm Prediction Center in Norman, Oklahoma, posted forecasts for higher tornado activity in the region on Thursday, three days before the disaster. University of Georgia meteorology professor Marshall Shepherd said government forecasters "were all over it."

An EF-5 tornado that struck Joplin, Missouri, in May 2011 killed 158 people. And an outbreak of tornadoes in the Southeast a month before that left an estimated 316 people dead, including at least 250 in Alabama.