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.