Last Friday, a powerful EF-5 tornado swept through the suburbs of Oklahoma City killing 18 people, including veteran tornado researchers and storm chasers Tim and Paul Samaras and Carl Young. Originally, the tornado was deemed an EF-3 on the Enhanced Fujita scale based on the damage it had done. But now, says the National Weather Service, the El Reno tornado has been upgraded to an EF-5.
Further, says Fox, the National Weather Service says that the tornado was 2.6 miles wide, making it the largest tornado ever observed. The previous largest tornado was 2.5 miles wide when it hit Hallam, Nebraska in 2004.
The El Reno tornado came just on the heels of the earlier EF-5 Moore tornado that killed 24 people in another Oklahoma City suburb. The El Reno tornado, says Fox, was twice as wide as the Moore tornado.
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