I'm east of ATL, too (Tucker). Here's what I suggest:
Prep like you would for tornado warning AND for snow/ice storm.
Tornadoes are very possible. I haven't paid much attention today for the possible Atlanta area impacts, but yesterday it seemed like we might get Tropical Storm strength and tornadoes, around Tuesday. Since tornadoes seem to like to strike at night here, prep a space where you'll be willing to go to when you and yours would rather be sleeping. Basement? Awesome! No basement? Interior room. No room without windows? Clear out a closet.
Snow storm/ ice storm: okay, that part probably won't happen! But you might be stuck in your house for a few days, so stock up like Channel 2 has declared Snowmeggedon. Do you have above ground power lines? Power has a good chance of going out. Below ground power lines and you can't remember when you last lost power? Power outages still a possibility, but probably less likely.
Are you the lowest spot in your neighborhood? Has your house flooded since you've lived there? If yes, get your favorite stuff off the floor. Flooding is probably not a big risk here, but if your location is prone to it, might as well take precautions.
My preparation so far has been buying a few non perishables and toilet paper, lol! I'm probably going to skip the Yellow Daisy Festival this weekend and clean up my basement instead, so that I can get a sleeping area set up. (I used to have a sleeper sofa down there, but it got ruined in a flood. Lowest spot on block + wet summer + massive storm + trees = power outages = no power to the sump pump = 6 inches of water in our basement 4 years ago ) Once the sofa left it became less "spare room" and more "hmm, not sure where to store this, I'll just put it in the basement". So, it's not really tornado warning ready!
I hope everyone is safe in the days ahead!