Waves of precip moving through the Upper GL will lead to significant snowfall as well as a corridor of potential sleet and freezing rain through the course of this week.
The first impulse via the 06z RDPS, hours 12 / 24 / 36 / 48:
Additional moisture should continue to eject towards the region beyond that point into mid-late week, leading to a messy transition zone between colder air to the NW and our expected end-of-month major warm sector to the S and E.
06z GFS, hours 60 / 72 / 84:
Accumulated precip-type @ hour 96:
The contrast between the varying air masses is quite stark @ hour 84: