Cleanup efforts and damage assessment are underway in Delaware's capital and on Long Island, New York, after tornadoes touched down. Storms battered the Northeast on Thursday with strong winds and heavy rains. Dozens of people were stranded in their cars during flash flooding in New York and New Jersey. Officials report no serious injuries. The National Weather Service said a trained spotter reported a tornado in Dover, Delaware, where several buildings were damaged. On Long Island, the weather service says it confirmed a tornado hit Atlantic Beach, where a beach club was heavily damaged.