The newer statistical models are showing an increased signal for the possibility of light snow Friday evening into early Saturday morning as a coastal low off the coast brushes our area. Because the precipitation arrives at night, temperatures will likely be cold enough for snow accumulation. Current predictions are a coating to 3 inches, more in NJ than extreme southeastern PA . I’ve noticed the new statistical models have been pretty good in forecasting precipitation in recent months.
The latest deterministic models (GFS, NAM) aren’t so sure about this, keeping the snow off the coast.
By the way, the NWS will be unveiling a new statistical forecast system sometime this month called the “National Blend of Models”. The NBM promises to provide increased forecast accuracy.