"At 11:04 a.m., a severe thunderstorm was located over Slocum Creek Campground, or 34 miles northeast of Rome, moving northeast at 20 mph," says the weather service. "Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees."

Some of the storm cells that develop Thursday have the potential to pack a big punch with heavy downpours, small hail, and damaging wind gusts as strong as 60 to 70 mph.