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 ...

The National Weather Service has upgraded the El Reno tornado from EF-3 to EF-5, the highest rating on the Enhanced Fujita Tornado Damage Scale, and named it the widest tornado ever measured. An EF-5 ...

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, ...

Tornadoes are a frightening threat during severe thunderstorms. Thankfully, only a tiny percentage of thunderstorms ever produce a tornado, and most of those twisters are relatively weak and ...