It feels very weird to have models relatively locked in on a decent snowfall for over 80% of the state!
We're looking at snow moving in from west to east across the state, starting mid-Friday morning in Western PA (except for south of Pittsburgh, where rain is likely), late Friday morning in Central PA, and early Friday afternoon in Eastern PA.
This isn't ideal timing, especially considering temperatures in the lower elevations will be above freezing. That will cut down on snow totals in Southern PA.
Let's start with the latest 3km NAM simulation, that includes much of the event.