Haven't posted yet on this as it does not seem to be a snow event. What should happen is the storm should run to the lakes with secondary development just off the coast.
Right now, all models show this. The difference is in timing and the eastern extent of the primary low. They are waffling between bringing the low to the lakes, then east over MI and NY where it secondaries, and bringing it west of the lakes, where it dies and the secondary forms in GA and runs up the coast. The first results in precip in on Christmas eve/morn, the latter with precip Christmas night into saturday. All models have the 540 thickness line going into Canada, so it will change to rain. The models also backload the precip - meaning that all the precip falls after the 0 line at 850 crosses. This is suspect. There is a high located in Canada, sliding off to the east which puts cold damming in to play. If the precip comes early, which the mets are progging, then there will be a period of sleet and freezing rain. If we can get the secondary stronger, it could be more interesting.