500mb height 144 hours

Surface Precipitation/Thickness 144 hours

First of all, ignore the temperature profiles, and thicknesses they are way too high (GGEM warm bias). Most of the members would also suggest the heaviest precipitation does make it north of Washington DC.
500mb height 168 hours

Surface Precipitation/Thickness 168 hours

For those hoping for a significant impact on the major cities, this particular run of the ensembles would at least come close to verifying that for you.
For pretty much everyone from Chicago on east, this is something that you need to keep a close eye on over the next few days. That includes those of you in the Lower Lakes, Ohio valley, Mid Atlantic, Northeast and Southern New England Especially South of Boston.
Tonight's run of the ECMWF did have the phasing needed to develop a major winter storm for the east coast, although, the phasing occurs too late.