From Robert Gamble at wxsouth:
After catching my breath, and regaining conciousness from viewing all the afternoon data and ensembles suite--I'd have to say this looks very ominous. Still 5 to 7 days out though, and subtle shifts could occur--but the least likely shift would be on the low level Arctic Cold temps. With precip falling, temps will be in the lower 20s throughout piedmont Carolinas, mid 20's Atlanta metro during heart of the event, even upper teens for temps in part of Virginia, eastern West Virginia--so snow ratios would be much higher than a typical 10 to 1 Ratio.
Imagine having 1" or more of Liquid Precip fall into air that is 27 degrees? I'm talking to you Georgia and South Carolina.