MOSSY GROVE, Tenn. — Representatives from the Federal Emergency Management Agency plan to view firsthand the storm damage in three Tennessee counties that resulted from Sunday’s tornadoes.

Kristie Goad, spokeswoman for Gov. Don Sundquist, said state officials won’t know until the end of the week whether they will receive federal assistance for the cleanup.

Joe M. Allbaugh, FEMA director, and the governor today will tour Mossy Grove; Crossville, Tenn.; and Manchester, Tenn. While the governor has declared Morgan, Cumberland and Coffee counties state disaster areas, the FEMA visit will provide an aerial and on-the-ground assessment for possible federal disaster relief.

At the Morgan County site Tuesday, Tina Freels watched insurance agents survey her tornado-ravaged home in this rural part of East Tennessee.

"This hurts," said Mrs. Freels, who suffered from several fractured ribs during Sunday’s severe weather. "My body hurts and my mind hurts."

Mrs. Freels was among hundreds affected statewide by a series of weekend storms that killed 16 people and injured at least 80 others. Rescue workers and volunteers spent Tuesday cleaning up the debris left behind in 21 Tennessee counties.

Cecil Whaley with the Tennessee Emergency Management Agency said all but one of the 150 people missing statewide were found alive by Tuesday afternoon. A team with a search dog continued looking in Morgan County for the missing person, and search helicopters scanned the area, he said.

The counties hit hardest by the severe weather were Morgan, Cumberland, Coffee and Montgomery, TEMA officials said.

Mr. Whaley said those reported missing earlier were unable to contact their families because of downed phone and power lines. At least 1,000 people were still without power as of late Tuesday, TEMA officials said. He said more people could be missing but their families haven’t informed TEMA.

"It’s hunting season up there," he said. "There is a very good possibility that there may be some other people out there who may have been lost because they were hunting."

Officials said the fatality count remained at 17. Sixteen people were killed by the storm, and one rescue worker died from a heart attack during cleanup efforts Monday.

According to the American Red Cross, more than 450 homes were damaged by the tornadoes, with more than 50 homes completely destroyed. Red Cross spokeswoman Sonia Moss said volunteers have opened a shelter in at least two counties.

Agent Michael Livesay of State Farm Insurance Co. jotted notes as he surveyed Mrs. Freels’ home in Mossy Grove in Morgan County. The four-bedroom home once stood at the intersection of Lone Mountain Road and U.S. Highway 27.

"She will get paid today," he said.

By noon Tuesday, Mr. Livesay and three other agents had surveyed four homes and wrote checks totaling $150,000 to victims. Insurance "catastrophe teams" were on their way to help hand out an expected $2 million in claims, he said.

"We’ll keep issuing payments because when there’s nothing left, that’s all you can do," Mr. Livesay said.

In the New Union community in Manchester, Cynthia Stowe sat in an office chair in front of her destroyed home with three boxes containing most of what was salvageable from her home of 14 years.

Sunday’s tornado is the second to hit the New Union community in the last eight years, she said. Ms. Stowe and several other area residents said they doubt they’ll rebuild their homes in New Union, where a 10-year-old boy and a man were killed by Sunday’s tornado.

"I don’t think too many of us that’s been through this mess would (rebuild) and risk having this happen again," she said as she stared at her yard littered with torn pink insulation and glass fragments.

Forty-two homes in Coffee County were destroyed by Sunday’s tornado, and members of about 70 households have been displaced by the storm, said Kelly R. Zadakaus, TEMA regional director.

William Fisher was driving an 18-wheel truck eastbound on Interstate 24 Sunday night when he said the tornado demolished his truck but left him unharmed. "The best I can figure, the tornado came down on my truck," the Lexington, Tenn., resident said. "The truck’s back was lifted and it sort of teeter-tottered, and then it spun around and landed in a ditch."

In Morgan County, Civil Air Patrol Capt. Bryan Jones and his team of 20 volunteers picked through scattered debris. After retrieving a broken trophy from the contents of a refrigerator, he said "that’s what’s hard, when you can only find the pieces."

"We’re trying to save what we can so these people don’t forget they had a life before this happened," he said.

Life has changed for more than those immediately affected by the severe weather, said 14-year-old Justin Matula, also a volunteer with the Civil Air Patrol. He will spend most of today continuing to help sift through rubble.

"This is upsetting because I’ve seen so many people crying and I feel so lucky," he said. "Everyone is trying to clean up physically and emotionally."

Ms. Moss with the Red Cross said mobile feeding units served more than 2,000 meals to families and rescue workers in 15 counties over the last two days.

Bulldozers worked Tuesday in New Union to clear large appliances and trees from the area. Large brushfires next to the destroyed homes consumed downed trees and other debris. Disaster relief volunteers, TEMA workers and even Coffee County prisoners called in to help in the cleanup efforts hurried in and out of the New Union Volunteer Fire Department, now known as the command center. "We came from four hours away so we could furnish a hot meal for 250 people tonight," said volunteer Faye Tomlinson, a member of the Southern Baptist Convention Disaster Relief in Hardeman County.

Mr. Whaley said other agencies helping with the rescue and cleanup include Army National Guard, Air National Guard, the state Department of Transportation, the state Department of Forestry, the state highway patrol, officers from state parks and officials from the Tennessee Valley Authority.

There have been no problems with looters so far, he said.

"Security is keeping the gawkers away," he said.

The storms were the nation’s biggest swarm of tornadoes from a single weather system since more than 70 tornadoes, some topping 300 mph, killed 50 people in Oklahoma and Kansas in May 1999.

Tennessee was among the hardest hit, with one twister packing 113 mph winds as it ripped a 200- to 300-yard-wide path around Mossy Grove on Sunday. A line of severe thunderstorms sent at least 11 tornadoes tearing through 21 Tennessee counties in two waves Sunday, officials said.

Overall, more than 80 tornadoes touched down throughout the Eastern United States, killing 16 in Tennessee, 12 in Alabama, five in Ohio and one in both Pennsylvania and Mississippi, officials said.

The Associated Press contributed to this article.