Eastern Cape Cod, east of Hyannis, MA will receive the bulk of the snow threat.  Several inches is likely.  850mb temp to the surface of the ocean differential (Delta Ts) are around +30 to +32C, and this will provide the kind of instability that will lead to thundersnows.  This is what the Tug Hill Plateau sees and so does Buffalo with SW winds.  However, the Cape does well with NNW and N winds at the surface, if we get any convergence we will see a singular band producing 2-4"/hour snowfall rates.  This could surpass the events of the past.  Stay tuned, snow map tonight after 00z models