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Tornado destroys houses in Pennsylvania

Barry Reeger / Tribune Review via AP

An aerial view of the damage to homes in Hempfield Township, Pa. on Thursday, March 24, 2011. A tornado was responsible for destroying or badly damaging about 90 homes in western Pennsylvania, National Weather Service meteorologists said Thursday as they continued a survey of the storm's aftermath. The worst damage from Wednesday's storm appeared to be in Hempfield Township in Westmoreland County along the U.S. Route 30 corridor, about 25 miles east of Pittsburgh. Local officials expressed amazement that no one was hurt.

Brian F. Henry / Tribune Review via AP

Brian Steiner of Midway, Pa. moves a grandfather clock from his friend Shirley Clark's home in Fort Allen, Pa. on Thursday, March 24, 2011. A tornado was responsible for destroying or badly damaging about 90 homes in western Pennsylvania, National Weather Service meteorologists said Thursday as they continued a survey of the storm's aftermath. The worst damage from Wednesday's storm appeared to be in Hempfield Township in Westmoreland County along the U.S. Route 30 corridor, about 25 miles east of Pittsburgh. Local officials expressed amazement that no one was hurt.

Keith Srakocic / AP

A large tree lays uprooted past the hole where it came from in a yard as people continue cleanup efforts, Thursday, March 24, 2011 in Hempfield, Pa. Severe storms went through the Westmoreland County area on Wednesday March 23, 2011, causing severe damage. The National Weather Service has confirmed that a tornado was responsible for destroying 30 homes and badly damaging about 60 more in western Pennsylvania. (AP Photo/Keith Srakocic)

 Here's more about this tornado.