While storm details remain uncertain, forecasters say the coldest air of the season is likely to blast the N.J. region next week.

A winter storm could blanket snow across parts of the Northeast on Sunday night. Here's what forecasters think this storm could mean for New England and for Washington D.C. before the inauguration.

Snow will turn into sleet and freezing rain along parts of the Southeast, as well as southern Arkansas, the weather service reported. Forecasters warn that icy conditions, between a tenth and a quarter inch of ice, will make travel dangerous for many. Power outages and downed branches are also a concern.

Twenty states, from Texas to Delaware, were on alert Friday for snow and ice as the storm continued to move across the South.

Separate rounds of winter storms could impact the Northeast as cold air tightens its grip, forecasters say. Key Highlights: Bitter cold temperatures, 10 to 20 degrees below average, are expected starting Tuesday,