The first evening model 0z HRRR has an extremely sharp modeled snow vs ice pellets/freezing rain signal that would make a big difference from say Philadelphia vs. Northwest Chester/Berks/Lehigh Counties. With no more than 2 inches at Philly with plenty of non snow mixing to a solid 7" to 10" across NW Chesco up thru the LHV and points northeast. Not a forecast but something to keep an eye on.