Did PVD not get additional snow after their 37.9" measurement? There were a couple of bands that pivoted through there that probably should've got them above 38" officially.
Central Park is obviously worse, they got 0.15" of liquid after their 19.7" observation at 1 PM. That is straight up shortchanging.
I have strong suspicion that they might as this point, they've been sitting under that band for at least a couple hours since the last observation plus it seems there is a bit of a westward expansion/extension right around PVD's latitude. Then you have all of the backside deformation/etc. to go as the storm continues lifting NE.