WPC feeds the SNEweenies (SNEnnies?) at 3:17pm today:
This area oflow pressure is to be positioned near the right entrance region of a potent jet streak over thenorthern Mid-Atlantic and southern New England, which will allow for strengthening. As a result,blossoming precipitation is expected to the north of the low pressure system and over an areaexperiencing subfreezing temperatures. A swath of heavy snow is most likely to occur fromnorth-central North Carolina to southeast Virginia and the southern Delmarva Peninsula. Regardlessof recent deterministic guidance trending more progressive with the system and limiting QPF overthe northern Mid-Atlantic, there remains numerous ensemble members and synoptic support hinting ata farther north solution. Given the ridging downstream over the western Atlantic, it won't takemuch to steer a system closer to the coast and extend heavy snow as far north as an area fromsouthern Pennsylvania to southern New England. Given the large uncertainty, the heavy snow area onthe hazards chart today depicts where most guidance overlaps the highest chances for receivinggreater than 4" of snow. However, it is important to note that changes to this forecast over thenext few days are still likely.