NAHUNTA, Ga. (AP) — The destructive wildfires tearing through Georgia this week are being fed by not only a persistent drought, but also by fallen trees and limbs scattered across the South by Hurricane Helene well over a year ago.

Blustery winds also are helping ignite and expand the fires in Georgia and Florida that have blanketed parts of several states in smoke, leading to air quality warnings Thursday in cities far from the blazes.

The weather forecast Thursday appeared to warn of another high-risk day, with shifting winds that could send embers flying in all directions a major concern.

Hundreds pf residents have been forced from their homes near Georgia's coast, where a wildfire destroyed more than 50 homes and threatened many more. Georgia's biggest fire near the Florida state line doubled in size in less than a day and by Thursday had burned through a sparsely populated area that's twice the size of Manhattan.

Many who were forced to flee this week were left distraught about the homes and animals they left behind.

“I don’t know if I have a house standing or not,” said Denise Stephens, who evacuated her home near Hortense because of the fast-moving Brantley County fire. “I know what it’s taken from other people, but I don’t know what I have left standing.”

Wood debris littering the state’s southern half since Hurricane Helene churned through in September 2024 has enabled Georgia's two biggest fires to spread and intensify quickly, officials said.

“There’s a ton of old Hurricane Helene debris down in the woods,” said Seth Hawkins, a Georgia Forestry Commission spokesperson. “It’s laying around and it’s just a tinderbox out there.”

The forestry commission estimated that Helene swept across nearly 14,000 square miles (36,000 square kilometers) of forestland statewide, striking areas where trees are grown for paper and lumber.

It isn't known yet how the wildfires started, but the bottom half of Georgia and northern Florida are both extremely dry.

In Florida, firefighters were battling more than 130 wildfires, mostly in the state’s northern half. Fire crews in Georgia responded to 34 new and relatively small blazes Wednesday, the forestry commission said.

Smoke from the wildfires was drifting across a large area of the Southeast, making the air unhealthy on Thursday for children and those with lung or heart problems in cities as far as Columbia, South Carolina. A haze hung over Atlanta’s skyline a day earlier and there was a smoky smell across the metro area.

Officials are hoping for rain to help tame the fires. There’s a 30% to 40% chance of showers or thunderstorms in the area of both big Georgia fires this weekend, according to the National Weather Service. While showers could bring some welcome relief, thunderstorms could also produce lightning capable of sparking more fires.

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Martin reported from Atlanta and Bynum from Savannah. Associated Press reporter John Seewer in Toledo, Ohio, contributed.