On this morning’s weather map, a brisk west to northwest flow of unseasonably cold air remains over the Great Lakes and Northeast regions of the United States. An area of high pressure is centered over the Northern Plain States.
The cold air moving over the Great Lakes, including Lake Ontario has resulted in lake effect snow this morning. Expect flurries and squalls to be most productive this morning before the negative impacts of the strong April sun take hold later this morning and this That is to say, this time of year, during the midday and afternoon, the sun can have a rather substantial and negative impact on the both the lake effect snow band and the ability for the snow to stick to the ground.
Consequently, lake effect snow will break up and become disorganized for the remainder of the day. Outside of lake effect snow, windy and unseasonably cold temperatures will be the rule as high temperatures will be some 10-15 degrees below normal. Wind chill temperatures will be in the teens and 20s.
Once the sun sets this evening, there are some indications that lake effect snow may try and re-organize. Were this to occur, then localized additional accumulations are possible. Once snow showers end Wednesday we should see some sun develop during the afternoon. Later in the week, high pressure will build into the region as milder air arrives, thus we expect high temperatures to reach close to 50 degrees Thursday and Friday…and even the weekend, though rain showers will be possible by Sunday.