A late winter Arctic air mass continues to pour across the northern plains, the Great Lakes and the Northeast. The air mass has moved into Pennsylvania and western New York State this evening. The cold air has pushed a nearly stationary cold front far enough south so that the heaviest rain and snow will fall across the Mississippi River Valley to southern New Jersey tonight and Monday. Up to 8 inches can be expected in Washington, D.C. with nearly 6 inches in Philadelphia and Cape May, NJ. Temperatures will fall into the single digits Monday night with below zero wind chills in the New York City metro area. Less than one inch of snow is expected through Monday. Low pressure forming along the cold front will move east as a large cyclonic circulation at 500 mb suppresses the track and snowfall to the south.
George Wright is a Certified Consulting Meteorologist for Wright Weather Consulting, LLC. Visit our website at WrightWeather.com. Follow George Wright on Twitter @gwweather.