From what I can see, the real risk of ice/sleet is from EZF south to the Carolinas. I don't really see any truly suppressed members that have NOVA/DC/Baltimore smoking cirrus while the Carolinas win. It looks like the "worst case" is a moderate 4" - 6" event.
Cold ai pressing in better at the mid levels. It's a great trend. All of the inland primary lows that tried to run into SW PA or northern WV are gone. Clear signal for a better transfer to the/a coastal.
Also,
12z Euro AI is a CLASSIC Mid Atlantic snowstorm. Primary low drives into Tennessee, then hands of everything to the coastal quickly and cleanly. 8" - 12" cold powder, weekend snow.
Yea 12z Thursday is my go/no go for this event. I'd much rather deal with suppression than worrying about something cutting. With such a fresh, strong push of cold air coming I don't think we have to worry about this cutting too much this time.
Earlier this month, Tomer Burg (PolarWx) on Twitter posited that DC - NYC could see something on the order of ~20" for the month of January and people laughed at him. He might be right.