One thing to realize is with this fast flow all events are thread the needle events regardless of how cold it is.
This area is very dependent on coastal systems and when they dont happen 90 pct of the time it wont snow.
If you're not going to have a coastal storm the only other way to get snow is to have LESS COLD AIR and to have mild air down by southern NJ setting up the storm track there. And that's why we are in a thread the needle type pattern. People always talk about gradient patterns, well we have thread the needle patterns too- and this is it. It can't be too cold or too warm it has to be just right for it to snow here in this kind of stable pattern.
And on another note, these fast flows have become much more common lately, might be another function of CC.