A family surveys the damage surrounding their property in Elmira N.Y., after a possible tornado struck the area, Thursday, July 26, 2012. The storm brought down trees and power lines, tore roofs off some buildings and caused motor vehicle accidents. Utilities report more than 20,000 customers without power in the area. (AP photos/Heather Ainsworth)

A family surveys the damage surrounding their property in Elmira N.Y., after a possible tornado struck the area, Thursday, July 26, 2012. The storm brought down trees and power lines, tore roofs off ... more
A family surveys the damage surrounding their property in Elmira N.Y., after a possible tornado struck the area, Thursday, July 26, 2012. The storm brought down trees and power lines, tore roofs off some buildings and caused motor vehicle accidents. Utilities report more than 20,000 customers without power in the area. (AP photos/Heather Ainsworth) less

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