FILE-In this Jan. 29, 2014 aerial file photo, abandoned cars at I-75 headed northbound near the Chattahoochee River overpass are piled up in the median of the ice-covered interstate after a winter snow storm, in Atlanta. A winter storm watch goes into effect at 4 a.m. Tuesday, Jan. 29, for Atlanta, a city known for its ability to grind to a halt even in relatively light snowfalls. (AP Photo/David Tulis, File)

FILE - In this Jan. 29, 2014 file photo, taken with a fisheye lens looking south toward downtown Atlanta, the ice-covered interstate system shows the remnants of a winter snow storm, in Atlanta. The National Weather Service projects that up to an inch (2.5 centimeters) of snow is possible Tuesday in Atlanta, with up to 2 inches (5 centimeters) in far northern suburbs. Forecasters warn of the possibility of ice-glazed roads and highways. (AP Photo/David Tulis, File)