Interesting that the EURO slips the surface boundary south tomorrow evening. Even has a weak Meso low in the gulf of Maine. Unfortunately, the real push of subfreezing air is so delayed, that we just rot in the mid 30s overnight. This would have been a lot more interesting if the initial cold push was better / oriented more E-W instead of SW to NE.
And now the 0z HRRR shifts everything 50 miles north