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.

Several states issued snow-related emergencies after an Arctic blast swept through parts of the central and eastern United States.