Mel Evans, Associated Press
Snow blankets Newtown Township, Pa., after a snowstorm moved into the Northeast on Friday. Up to a foot of snow interrupted what had been a mild winter in much of the Northeast and created havoc for travelers, forcing the cancellation of more than 1,100 flights in the New York area. Roads throughout the region were slick, and there were numerous accidents.

Snow blankets Newtown Township, Pa., after a snowstorm moved into the Northeast on Friday. Up to a foot of snow interrupted what had been a mild winter in much of the Northeast and created havoc for travelers, forcing the cancellation of more than 1,100 flights in the New York area. Roads throughout the region were slick, and there were numerous accidents.