Much colder air will pour across the area Monday night and Tuesday
in the wake of a secondary cold frontal passage, with 850Ts
dropping down into the mid negative teens Celsius. As equilibrium
levels rise to near 10K feet, bands of lake effect snow will
blossom within a WNW to NW flow. It is looking more and more
likely that there will be at least some semblance of an upstream
connection with Lake Huron/Georgian Bay. This only increases
the potential for some advisory level snows, mainly ESE/SE of the
Lakes, especially ESE/SE of Lake Ontario during the second half of
Monday night through Tuesday morning. Thus, have upped snow amounts
some during this timeframe as things become a bit more clear. If
confidence continues to grow, winter headlines may be needed