Although the 2013 tornado season to this point has been one of the slowest in the past 60 years, there were two extremely powerful tornadoes that did form in Oklahoma this past May. The first occurred ...

The tornado that struck El Reno, Okla., Friday "is officially the widest known tornado in the U.S.," says the National Weather Service office in Norman, Okla., announcing today that at its widest, the ...

A damaged sign lies outside the wreckage of Plaza Towers Elementary School, where seven children were killed when a tornado hit Moore, Oklahoma, in May 2013. (AP Photo/Charlie Riedel) A decade ago, ...

Two hours is all it took for the ominous clouds above to transform into a swirling mass of destruction. In the early evening of May 31, 2013, the widest tornado ever recorded — at 2.6 miles in ...

NORMAN, Okla. -- Dear Mother Nature: Oklahoma has suffered enough. It was enough to bring a devastating EF-5 tornado to Moore in mid May. But to bring a second EF-5 tornado to the same general area 11 ...

A tornado on the ground near El Reno, Okla., just south of Interstate 40, about 25 miles west of downtown Oklahoma City. That mammoth tornado near El Reno, Okla. — the one that outsized the Hallam, ...

The El Reno tornado, Joplin tornado and Tri-State tornado are among the biggest and most damaging twisters in U.S. history. Tornadoes can be more than a mile wide and have wind speeds greater than 300 ...