On Friday, May 31, 2013, an EF5 tornado near El Reno, Oklahoma was 2.6 miles wide. That is the widest ever recorded, and was more than twice the size of the storm which hit Moore, Oklahoma on May 20, 2013.
The old record width for a tornado was the 2.5 mile wide F-4 tornado at Wilber-Hallam, Neb., on May 22, 2004.
The El Reno storm was on the ground for 16.2 miles.
Sixty EF5 tornadoes have been recorded since the system was established in 1950.
Originally posted 2015-01-05 01:45:03.