.LONG TERM /WEDNESDAY THROUGH FRIDAY/...
Big changes amongst the 29/12Z guidance packages in regards to p-
type and the eventual track of the sfc low.
Cold front eases into the region on Wednesday with a mix of
rain/snow. After that it`s all up in the air to what happens.
ECMWF guidance...has gone even colder with this update and has
significantly pushed the track of the sfc low well to our ESE of the
region. This would mean an all snow for the event but would also
shift the heavier snowfall amounts almost out of our area. Canadian-
NH...it too is colder but not quite as aggressive with the ESE push
of the sfc low. GFS guidance...this is the warmer solution and has
maintained the track of the sfc low through the Ohio Valley NE
across Western and North Central NY. That said, the GFS track is
also "NOT" climatologically favorable but it can`t be rule out
either. The key to this event will likely be the timing and then
eventual placement of the 850 hPa thermal boundary. Way too early to
know exactly where it sets up or even stalls...if it does at all
(see..ECMWF). So with this update (low confidence)...have again
leaned on a blend of all solutions to get a middle of the road
picture. Lots can and will likely change between now and the
Wednesday evening through Thursday night time frame.
Friday and beyond, it looks fairly straight forward with a colder
air mass filtering into the region. There will also likely be some
accumulating lake snows ESE of the lakes which then slowly diminish
over the weekend.