Lake snow event for Bills game!?! 100% all about it! This is why cutters aren't the worst thing as wolfie mentioned you can get some good W/SW flow behind them if cold air is there.
A change to a meridional flow this period will bring active weather
to our region.
Sunday an upper level trough will deepen over the western Great
Lakes, while zonal flow over the Northeast amplifies. This trough
will deepen a surface low to our west and north...one that the
operational model runs of the GFS, ECMWF and Canadian are in fairly
good agreement with as far as track and deepening the low. Attached
to this deepening surface low will be a cold front, with convective
showers ahead and along it Sunday Night. The cold front will reach
WNY early Monday morning, sweeping across the region through the
day...with post front steeping lapse rates and mixing level heights
supporting strong winds.
Cold air at 850 hPa deepening -10 to -14C behind the cold front
through Tuesday will set the stage for a lake effect precipitation
response, with accumulating lake snows likely Monday afternoon
through Tuesday. Exact placement is still uncertain at this
point...but could include areas northeast of the Lakes, including
Buffalo and Watertown Monday.
High pressure will briefly near the region Tuesday, with winds and
lake snows diminishing, but another storm system Wednesday could
renew the stronger winds along with areas of rain and snow.