Good summary for you by LWX - snipped the portion about Friday into Saturday:
KEY MESSAGE 3...A low pressure system may bring snow to the
Allegheny Mountains Friday through Saturday night.
One, possibly two low pressure centers will meander through the
Great Lakes Friday into Saturday as a series of shortwave troughs
result in amplifying long wave troughing into the eastern US. There
may be some light snow showers along the Allegheny Mountains on
Friday, but the higher chances will arrive Friday night through
Saturday night as the main trough approaches. Temperatures may
attempt to rise above freezing Saturday in some of the valleys
before the cold front pushes through, but profiles will be cold
enough for all snow for most locations along and west of the
Allegheny Front. Accumulations resulting in travel disruptions are
possible. To the east of the Alleghenies, there are mixed signals
whether any precipitation falls, but it will be related to the
push of warm advection Saturday morning and/or the cold frontal
passage Saturday afternoon/evening. Some snow or a mix could
occur depending on the timing of any precipitation, but at the
moment, impacts appear limited at the lower elevations. For
temperatures, Saturday is expected to be the warmest day of the
weekend before the cold front pushes through.