Tornado damage in Moore, Oklahoma

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A child’s book, picked up and blown by the tornado, rests in mud at the edge of a shopping center parking lot.

The National Weather Service says the massive tornado that raked Moore, Oklahoma on Monday, May 20, 2013, was an EF5, the most powerful category of tornado possible, and had estimated peak winds ranging from 200 to 210 mph and was 1.3 miles wide. At least 24 people — including nine children — were killed.