On this morning’s weather map, a cold front is evident from southeast Canada southwest through the upper Great Lakes and into the upper Plains. High pressure is evident well south east and northwest of this boundary.
As the cold front drops south, brisk west to southwest winds will keep lake effect clouds and snow showers over the Tug Hill region. By early evening, the front is forecast to be positioned along the south shore of Lake Ontario. This will help to enhance any pre-existing lake effect snow showers. Additionally, it will force snow showers south with the advancing cold front and likely produce a period of snow showers of much of the region tonight. For the most part, accumulations will be 2” or less, though the some odd higher amounts cannot be ruled out.
By Friday morning, the cold front is forecast to be south of the NY/PA line. Behind the front, winds will turn into the northeast, consequently, any impacts from Lake Ontario will cease as colder air seeps into the region.
The cold shot of air will be short-lived as milder air will already be on the move and into Central New York. The arrival of the milder air will be signaled by clouds and probably some light snow Friday night. Leftover snow or rain showers may fall Saturday as temperatures rise into the 40s. Even milder air will arrive Sunday as the warm front moves north of the region.
Thereafter, the front may briefly sag south later Sunday into Monday. This would result in the threat for showers as well as somewhat cooler air Monday. Then, in response to a developing Mid-west storm, the front is forecast to lift back north as a warm front Tuesday. This would mean even warmer temperatures are possible Tuesday with highs reaching well into the 50s to near 60.