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An enormous tornado--estimated at a mile wide--passed through Moore, Oklahoma, a suburb south of Oklahoma City. It was on the ground for about half an hour and witnesses said it was throwing houses in the air. As many as 28 tornadoes have torn through Oklahoma, Kansas, Iowa, and Illinois since last night, killing at least two people. About 300 homes were destroyed in the state yesterday, and the storm system may still produce more tornadoes. The strongest winds on earth, at 302 mph, were recorded near Moore in 1999.