The National Weather Service confirmed an EF1 tornado touched down in East Hopewell Township, in southern York County Monday evening. The tornado reached a top wind speed of 107 miles per hour and traveled under half a mile. When there is severe weather with unusually high winds, the weather service investigates to determine what caused damage from a storm. Why is important to confirm a tornado or not? Joining us on The Spark is John Bowen, a meteorologist with the National Weather Service in State College.

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