With the forecast trajectory of the cold air mass, origin, track and position of the high pressure just imagine what could happen with a snowpack for the late week outbreak! NYC would have a shot at zero or a tad below. The airmass over southeast Canada and adjacent NYS/NE will be truly untouched pure Arctic air. Intensely cold. We may rival some of the overnight lows of the Christmas outbreak but not quite get to those levels. Might be close though depending on a few factors. Not the least of which is the timing of the coldest of the 850's over the area. Useless cold air I know but at least SOMETHING to take interest in.