OKLAHOMA HORROR 51 Confirmed Dead... 20 Children... At Least 230 Injured... Death Toll Expected To Rise...Oklahoma Tornado 2013 Devastates Moore, Kills Dozens (GRAPHIC PHOTOS)

MOORE, Okla., May 20 (Reuters) - A 2-mile-wide (3-km-wide) tornado tore through the Oklahoma City suburb of Moore on Monday, killing at least 51 people while destroying entire tracts of homes, piling cars atop one another, and trapping two dozen school children beneath rubble.

Twenty of the 51 confirmed deaths were children, the Oklahoma medical examiner said, and at least 45 of the 230 people injured were children, according to area hospitals. It was the deadliest U.S. tornado since one killed 161 people in Joplin, Missouri, two years ago.

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President Barack Obama declared a major disaster area in Oklahoma, ordering federal aid to supplement state and local efforts. READ More...