Photo: Whitney Curtis/Getty Images
At least a dozen people were killed and more than 100 were injured by a string of overnight tornadoes that started in Kansas and continued on through Missouri, Illinois, Indiana and Kentucky. At least six were killed in a Harrisburg housing subdivision after powerful winds picked up a house and dropped it on several other houses.
Photo: Scott Olson/Getty Images
Picking up the pieces
Josh Summers and his wife, Lindsey, search through the sea of debris in hopes of salvaging some of their possessions after a tornado ripped through their neighborhood in the early morning hours of Feb. 29 in Harrisburg, Ill.
Tornadoes that strike during the night are deadly because people are usually sleeping and are not aware of warnings and alarms. In Harrisburg, the tornado touched down at about 4:30 a.m., when many people were still fast asleep.