After a small LES event today into tomorrow it looks like a cutter goes into the northern Great Lakes with a possibility of a redeveloping low in the Northeast. This will allow a chance at a stronger LES event at the end of the weekend.
This weekend
DAYS TWO THROUGH SEVEN...Wednesday through Monday.
Cold air passing over the Eastern Great Lakes this weekend will bring
the potential for accumulating lake effect snow, with the possibility
for significant amounts. Lake snows are most likely Saturday night
through Sunday night.
Saturday, the surface coastal low quickly departs off to the
northeast towards the Atlantic coast. In its wake, cold air
advection nudges 850 hPa temperatures down to around -8C/-10C by
Saturday evening. It will likely be until after the upper level
trough of low pressure passes overhead that lake snows will
begin...with the best timing Saturday night and into Sunday. There
will be marginally cold enough lapse rates for lake snows, but with
lake induced equilibrium levels reaching 5 to 8K feet, as winds
align Saturday night and into Sunday, decent plumes of lake snows
are possible, especially east of Lake Ontario where lapse rates will
be slightly steeper. The 00Z ECMWF is most aggressive with ending
the lake snows, pushing a surface ridge towards our region Monday,
while the GFS and Canadian maintain the potential for lake snows
into Monday.
Looking further ahead it looks like the EPO goes negative around the 20th. The other indices below
With a -EPO and -NAO it should set a battleground for synoptic systems somewhere near our area. I still see some cutters, but we should get into a more active wintry pattern.
Looking even further out below
EPS
GEFS