Friday. Based on previous guidance was all set to rush this system
east of the area pretty quickly on Friday. However, trends now
showing up that there could be yet another low-level wave lifting
through to keep snow going through midday while larger scale lift
ramps up again as northern stream trough advances across the Great
Lakes. While this occurs northeast to northerly winds will be
flowing across Lake Ontario with temps at top of inversion
sufficient for lake enhancement. All in all, increased QPF and snow
a bit compared to any larger scale blends and previous forecast. If
the more amplified ECMWF and Canadian-Regional are right on this
trend (supported more now by 06z NAM), then could see even more snow
on Friday especially from lake enhancement. Still cannot rule out
some blowing snow especially in open areas near Lake Ontario. Coord
with near term forecaster on headlines with the system and opted to
go to 15z for end time of warning over far western NY and to 18z for
rest of the area. System finally pulls east late Friday, leaving
persistent but light lake effect off Lake Ontario in a more
northwest flow by that point. Temps chilly on Friday with readings
in the upper teens to near 20F not rising much from overnight lows
Thursday night. Wind chills will be as cold as the single digits
below zero east of Lake Ontario to the single digits above zero