Wednesday night, a deepening upper level carving out over the Great
Lakes will allow for a powerful surface low pressure system to
strengthen as it passes right over or just northwest of our region.
This will bring rain at the onset, with rain changing to snow as
colder air works in on the back side of the low. This may be a
decent synoptic snowfall for some as there appears to be plenty of
available moisture wrapping in on the back side of the low in the
colder air. In addition, with this powerful storm potentially
passing just northwest of the area, strong winds will also be a
possibility.
This will set the stage for some northwesterly upslope and lake
enhanced snows for Thursday in the wake of the system as a much
colder airmass settles into Western and North Central NY. After some
leftover snowshowers Thursday night, ridging both at the surface and
aloft will dry things out, making for a quiet end to the work week