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Ala. tornado

A home under construction after being leveled during an April 2011 tornado, lies damaged again, Friday, March 2, 2012 in Harvest, Ala., after another reported tornado. (AP Photo/The Huntsville Times, Bob Gathany)

Widespread damage from Alabama tornadoes

Apparent tornadoes destroyed houses, sent people to hospitals and tore up the roof of a maximum security prison in northern Alabama as bad weather threatened more twisters across the region Mar. 2, two days after a storm system killed 13 people in the Midwest and South.