The National Weather Service in Peachtree City has extended the tornado watch for Gwinnett County until 5 a.m. as a powerful storm system is moving across north Georgia.
Earlier on Friday, the weather service issued a tornado warning for the county which expired just after 10 p.m.
Haralson County Fire Chief Brian Walker said late Friday that a person was injured in the collapse and was trapped for about an hour by debris. No other serious injuries were reported. Walker said power lines and trees were down throughout the northern part of the county.
"It's been a very busy night for us," Walker said. "We urge residents to stay off the roads."
Jessica Fieux, a meteorologist with the National Weather Service, said it appeared a possible tornado had moved from Haralson into Paulding County. North Georgia remained under a tornado watch until 5 a.m. Saturday.
Local authorities were surveying damage from the line of storms late Friday night, said Lisa Janak, a spokeswoman for the Georgia Emergency Management Agency. There were reports of trees knocked down in Cobb County.
"This is still a very active system," Janak said.
Paulding County Sheriff's spokesman Cpl. Ashley Henson said some homes had sustained damage in the storm. There were no immediate reports of any injuries.
There were also no immediate reports of damage in Floyd County, which had also been under a tornado warning, according to county emergency management chief Scotty Hancock.
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The Associated Press contributed to this report.