The clash between fresh cold air Saturday into Sunday morning along with tropical moisture offshore drives this storm.
On Saturday morning, this storm was in the Mid-South It brought snow to Wichita, Kansas. Snow will have moved into cities like Birmingham, Alabama, Nashville and Atlanta by the end of Saturday.
From there, it took a turn to the north around the jet stream, the river of air that separates two airmasses. However, an area of high pressure moving from New England out to sea will block the low-pressure system from taking its usual coastal storm track.
Rather than go off the Southeastern Coast and move toward the Canadian Maritimes, it will go off the coast and go due north. Therefore, it's an inland track, with the center of the low-pressure system going over Washington D.C. and Harrisburg, Pennsylvania. This will mean winds will be southeast or east, rather than the colder, northeast direction, a pivotal part to the forecast.
Contact Joe Martucci: