Friday's Oklahoma tornado was one for the record books.
Fires, floods, storms: Mother Nature sends extremes across U.S.
The National Weather Service says the twister was 2.6 miles wide- making it the widest U.S. tornado ever. It was a rare EF5; the highest level of tornado intensity.
Bill Nye and Tom Foreman explain why the tornado was so large.
wow did not think there would ever be a tornado larger than the wilbur/hallam nebraska tornado.