Marine puke from NAO. We saw it in late December 1995. With a strong snowpack we had several days of low to mid 40s for highs, 30ish nights until the reload right around New Years that eventually gave us the big January storm that produced very heavy snow BOS-southward with a Philly jack of 30 inches. I think BOS got around 19-20. I went xc skiing in the arboretum the day of the storm before snow started. Temps in the high teens, deep snow cover-it was heaven.