In addition to the high winds, instability in the atmosphere could generate tornadoes in thunderstorms ahead of the squall line or in supercell storms embedded in the squall line.
Now, Gov. Nathan Deal has declared a state of emergency Sunday morning for seven counties in the state.
Tornado activity is remaining a threat across south Georgia, where 11 people were killed early Sunday.
The reports come as at least four people were killed in Hattiesburg, southern MS a day earlier.
She said the deaths were related to severe weather but could not specify whether tornadoes were the cause. Another four people were killed in MS by a tornado on Saturday, bringing the weekend death toll to 15. Generally, the main period for thunderstorms is expected to be between 4 p.m. and 10 p.m. About half of the 40 mobile homes in the park were destroyed in the storm, Coroner Tim Purvis said. A statement on the website for the Mississippi Emergency Management Agency confirmed four deaths and over 20 injuries stemming from tornadoes that struck Mississippi Saturday.
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Seven people were killed in Cook County, while four fatalities were reported in Brooks and Berrien counties.
Squalls are forecast to move quickly across the area this afternoon with damaging straight-line winds of 60 miles per hour, near hurricane strength, with gusts of up to 80 miles per hour possible, the Weather Service has warned.
The storm has already killed 11 people and injured 23 in Georgia late last night.
Already, we had a period of heating, which the weather service says will cause a greater risk of instability in the atmosphere, making storms more likely.
The National Weather Service said Sunday that southern Georgia, northern Florida and the corner of southeastern Alabama could face forceful tornadoes, damaging winds and large hail.