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A major tornado struck the Oklahoma City area on May 3, 1999. Although, at the time, it was the costliest tornado in U.S. history and had the highest ever recorded wind speed. it was nowhere near the largest.

Another tornado on the same day impacted Mulhall, Oklahoma with Doppler radar indicating that the tornado may have been 4 miles wide. This would easily have made it the largest tornado ever recorded, but apparently it was not confirmed as this figure does not appear in official records, and the official path width is 1 mile.

Officially, the largest tornado ever recorded was near El Reno, Oklahoma of May 31, 2013 with a width of 2.6 miles. The previous record was set by the Hallam, Nebraska tornado of May 22, 2004. Before this, the record holder appears to have been the Moshannon, State Forest, Pennsylvania tornado of May 31, 1985.

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12y ago

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