Couple opportunities next week..
The next upper level trough and associated cold front is expected to
track across the Great Lakes Sunday. The trough will sharpen over
the Great Lakes by late Sunday, with the cold front reaching the
eastern Great Lakes in the afternoon. This will bring increasing
clouds and a chance of a few rain showers, especially in the
afternoon.
Behind the cold front Sunday, cold advection will bring a return to
below normal temperatures Sunday night and Monday. WNW flow and wrap
around moisture may support some broad lake effect rain and snow
showers Sunday night through Monday morning, especially southeast of
the lakes.
Forecast uncertainty increases somewhat by Monday afternoon and
Tuesday. A wave of low pressure and mid level trough pass to the
north across Canada Monday evening into Tuesday. The ECMWF and
Global GEM are stronger and farther south with this feature than the
flat wave depicted by the GFS. If the stronger solutions verify, a
fresh batch of cold air would arrive later Monday into Tuesday with
a few more lake effect rain and snow showers east and southeast of
the lakes. For now, kept low chance POPS through this period.