Speaking more for southern VA here... The is a very dense arctic airmass that is moving across the northern parts of the CONUS. This airmass will obviously moderate some, but it will still be very dry and will be hard to scour out once the precipitation begins to fall into it. I've seen some of the best CAD favored areas hang onto below freezing temperatures for an entire duration of an event even with a retreating high. While yes, ZR is self-limiting and the high is transient, these mountain valleys are incredibly hard to "warm" once the low-level cold is locked in with precip falling.
The lighter precipitation at the start with temps in the mid-20s is very much a concern. 6-8hrs of that and you have a mess. Like usual, I'd be most concerned about the Blue Ridge and areas just to the east.