– A strong storm system barreling through the South on Friday killed an 8-year-old girl in Florida and threatened to bring tornadoes to large parts of the Carolinas and southern Virginia.

A tree fell onto a house in Woodville, Fla., south of Tallahassee, killing the girl and injuring a 12-year-old boy, according to the Leon County Sheriff’s Office. The office said in a statement that the girl died at a hospital while the boy suffered noncritical injuries.

The same storm system was blamed for the deaths a day earlier of three people in Mississippi and a woman in Alabama.

In Mississippi, Freddie Mobley, 63, died while helping cut a tree that had fallen on a house, Lincoln County Coroner Clay McMorris told the Daily Leader of Brookhaven.

The two other people in Mississippi were driving and are being counted as storm-related deaths.

The woman in Alabama died when a tree fell on her mobile home Thursday.

The threat on Friday shifted farther east, where tornado warnings covered parts of northeast Georgia, the Carolinas and Virginia.

The national Storm Prediction Center said 9.7 million people in the Carolinas and Virginia were at a moderate risk of severe weather. The region includes the Charlotte, N.C., metro area.

Torrential downpours, large hail and a few tornadoes were among the hazards, the National Weather Service in Raleigh, N.C., warned.

Radar readings appeared to show a tornado formed in western Virginia’s Franklin County, south of Roanoke, though damage on the ground still must be assessed, said National Weather Service meteorologist Phil Hysell.

In South Carolina, authorities urged motorists to avoid part of Interstate 26 — the main artery from Upstate through Columbia and all the way to Charleston — because downed trees had left the roadway scattered with debris.

In Georgia, the storm system knocked down trees, caused flooding and cut off power to tens of thousands of people.

A tree came down on an apartment complex in an Atlanta suburb, but only one person reported a minor injury and was treated at the scene, Gwinnett County fire spokesman Capt. Tommy Rutledge told the Atlanta Journal-Constitution.

In Forsyth County northeast of Atlanta, three firefighters suffered minor injuries when their firetruck overturned during heavy rain and wind, Fire Department Division Chief Jason Shivers told the newspaper.

Meanwhile, hundreds of people cleaned up part of a central Mississippi town hit hard by a tornado on Thursday.

Volunteers and family members were swarming the north side of Morton, where the National Weather Service said a twister with winds as high as 132 mph hit a neighborhood. More than 20 homes were heavily damaged or destroyed. The town of 3,500 is about 30 miles east of Jackson.

“When it stopped, there was nothing left,” Morton resident Sharon Currie told WAPT-TV. “I was going, ‘Oh my God. My house is gone.’ ”