A winter storm warning for Atlantic, Camden, Cape May, Cumberland, Gloucester, Salem and southeast Burlington runs until 1 a.m. Tuesday. The National Weather Service’s forecast calls for snow to end around 1 a.m. Tuesday in the Atlantic City area and an hour later in Cape May County.

Here is the hourly forecast for snow estimates in Philadelphia, New Jersey and Delaware ahead winter weather warnings and significant snowfall Monday.

A deadly winter storm is pummeling Washington, DC, and the mid-Atlantic Monday after causing hundreds of crashes and flight cancellations and knocking out power to hundreds of thousands in the central United States over the weekend.