Seems like it may have been a tornado. The above image from CBS46, while below is a story from ABC2
"A spokesman for the National Weather Service told WSB-TV Channel 2 reporter Ross Cavitt some of the damage was caused by a F1 tornado."
Read the slight more expansive reporting here
Storms Damaged 1,000 Cherokee Homes
It really was this dark too, however, I was not able to see any light, there was too much, wind, rain, and debris. Also saw a clip for tonights newscast on FOX (I believe), which looks to have video from people in a car.