Cold and Snow Showers by the Weekend in the East
The coldest air mass of the season will spread into eastern Canada this weekend with the first snowflakes of the season for many.
The first snowflakes of the season will likely be seen across parts of Ontario and southern Quebec this weekend as the cold air moves across the warmer lakes, which will add to the instability. The best chance of a covering of snow will be in the higher terrain. There could even be some snowflakes in the air Saturday night in the lower elevations and closer to the lakes Saturday night across southern Ontario.
The increased instability could also lead to some cold air funnels/waterspouts over the eastern Great Lakes on Saturday.
In addition to the snow showers there will likely be a killing freeze for many non-urban locations away from any large bodies of water Sunday night. Areas that are very close to the lake or larger cities will still drop to near freezing with some frost, but not a killing frost.
Below are the GFS and Canadian model temperature forecasts for early Sunday and early Monday morning in the East in deg. Celsius. Notice the warming influence of the Great Lakes.
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***Note: We are continuing to work on the winter outlook for Canada and it will be released next week.
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