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UPDATE: El Reno, Union City tornado widest tornado on record

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Posted at 10:24 AM, Jun 04, 2013
and last updated 2013-06-04 12:26:26-04

(KFOR) The National Weather Service has just upgraded the May 31 El Reno, Union City tornado to an EF-5 with a width of 2.6 miles wide, making it the widest tornado ever documented.

EF-5 is the highest possible rating for tornadoes on the Enhanced Fujita scale.

The upgrade was based on information from a Dopler On Wheels (DOW) that measured low level winds of 296 miles per hour.

This tornado is double the width of the May 20 tornado in Moore, Oklahoma.

The F-4 Wilber-Hallam, Nebraska, tornado May 22, 2004 was the previous record holder for the widest tornado on record at 2.5 miles wide.

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