As a cold front exits off the New Jersey coast this morning, another storm begins to organize over the northern Plains. This developing low pressure system will bring the first accumulating snowfall to the Philadelphia and New York City metropolitan areas for the new year.
High pressure over the Great Lakes will shift towards the New England coast today with clearing skies. As cold air builds in, temperatures will stall and hold in the lower to mid 30's over the interior and mid to upper 30's along the coast. Clouds will increase by this evening as winds shift to the east and southeast, transporting moisture into the fresh new cold air mass over the region.
Late tonight through tomorrow morning, the low pressure system over the Northern Plains will move through the Tennessee River Valley and off the New Jersey coast. Warm air will invade from the south and southeast ahead of this low pressure system leading to snow breaking out by late tonight for the entire northern Mid Atlantic.