The tornado that struck El Reno, Okla., on Friday night is believed to be the widest on record in the United States at 2.6 miles across, the National Weather Service reported on Tuesday.
The May 31 twister beat the previous record, a 2.5-mile wide storm that struck Hallam, Neb., on May 22, 2004.
The Friday tornado and its resulting flooding claimed 18 lives, including six children and a dozen adults, the Oklahoma Medical Examiner reported on Tuesday. Six of the victims remain unidentified. Area hospitals treated 115 injuries after Friday's storm, the Oklahoma Department of Emergency Management said.
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