My Personal Weatherman™
Friday night cold/wind and the Monday snow:
The 1st image shows the wind gusts from the NAM at 7 PM Friday with wind chills already in the 20's on Long Island at that time.
The 2nd image is the 24-hour snow map from the brand-new GFS run. This map ends at 7 PM Monday, and there will be a little more snow for northern New England after that time.