WPC discussion sounds great for many. Indeed there will be a lot of high-fiving across this whole region. 1 to 2 in./h, possibly exceeding 2 in./hr
As the parent shortwave continues to track progressively to theeast, the accompanying forcing and moisture will also pivot withit, and secondary low pressure development is likely off of the NJcoast late Saturday night into Sunday morning. This low will becomedominant and intensify as zonal but modestly coupled jet structuresinteract with a baroclinic zone offshore. As this low deepens andmoves almost due east south of New England, it will cross near theBenchmark (40N/70W), leading to a substantial snow event forUpstate NY, the Poconos, and at least Southern New England (SNE),although there remains uncertainty into how far north (or south)the heaviest snow will spread. As the low deepens and pulls away tothe east, a renewed surge of cold air both through theageostrophic flow into the low and the subsequent CAA in its wakewill limit the progress of the warm nose, while dry air to thenorth noted in regional soundings inhibits PWs from aggressivelylifting towards Canada. In between, an axis of heavy snow is likelyas strong WAA produces impressive 850-600mb fgen, producing strongascent into the DGZ. The overlap of this strong fgen with sometheta-e lapse rates approaching 0C/km suggests banding potentialfrom Upstate NY into SNE, and with elevated SLRs, snowfall rates of1-2"/hr appear likely. Total snowfall will be limited by the speedof this system as it will only snow in most areas for 12-18 hours,but this will still result in heavy accumulations. WPCprobabilities for more than 6 inches of snow are high (>70%) fromthe Mohawk Valley of NY eastward into much of MA, southern VT,southern NH, and the southeastern tip of ME. Locally 8-12" of snowis possible in some areas.