OKLAHOMA CITY, Okla. (KFOR) — The National Weather Service has 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 National Weather Service said some of the subvortices had a forward movement of up to 180 miles per hour.
The tornado was double the width of the May 20 tornado in Moore, Okla.
The F-4 Wilber-Hallam, Nebraska, tornado from May 22, 2004 was the previous record-holder for the widest tornado on record at 2.5 miles wide.
Read more: KFOR.com