A "surge" of Arctic air will "invade" much of the eastern two-thirds of the U.S. over the New Year's period, forecasters warned — as lake-effect snow began hitting parts of New York Tuesday evening.
The big picture: This multi-day severe weather event that prompted N.Y.'s governor to declare a statewide emergency will see this "snow machine" downwind of lakes Erie and Ontario dump an additional 1-2 feet with locally 3+ ft possible within the heaviest snow bands in a region that's already been pummeled by a potent winter storm this week, per the National Weather Service.