More than 2,000 flights canceled as severe storms hammer East Coast

At least 7,000 flights were disrupted Tuesday as severe thunderstorms swept across the East Coast, snarling air travel at some of the nation's busiest airports.More than 2,000 flights within, into or out of the United States were canceled, while over 5,000 others were delayed, according to FlightAware.The storms prompted flood warnings and tornado watches across parts of the Northeast on Tuesday. Weather and emergency officials indicated at least two tornadoes were spotted — one in northea