Thunderstorms with winds as strong as 60 miles (97 kilometers) per hour across the U.S. Northeast have tied up air traffic from Boston to Washington and caused hundreds of flights to be canceled. Pounding rain and gusting winds have knocked down trees, wires and damaged buildings from Kentucky to Connecticut, according to the U.S. Storm Prediction Center in Norman, Oklahoma. Tornadoes were reported near Binghamton, New York, and in Lynn, Massachusetts, just north of Boston.