As progged by the GEFS, the 28 - 30 system is still too warm. But, it may be setting the stage for the next system by pulling colder air down from the Lakes.
Yes, this is fantasy-land beyond 300 hrs. but we could have a winner in the first 5 days of Jan.
Source of origination, northwest Gulf is prime all the way back to the 60's. Usually a general track to Alabama/ southeast North Carolina and up the east coast has produced. Recently, eastward across the Gulf intensifying up the east coast as the GFS paints is good. Upper air temps. look good to support snow.
The GEFS contradicts itself at 360 by showing rain with a minus 4 850 and the 540 in N.C...... The Op may be onto something.