May 20, 2013, marks the last time the United States was hit by the worst type of tornado. On that date, a monster EF5 tornado tore a 17-mile path through the Oklahoma City suburbs, creating "40 ...

There have been many powerful tornadoes that have carved deadly paths across the U.S. in recent years, but none have hit with the ferocity of an EF5. Moore, Oklahoma, tornado May 20, 2013 The most ...

MOLINE, Ill. — A new study published by the American Meteorological Society has shed light on a puzzling phenomenon: The United States has not logged an EF5 tornado, the most violent category ...

And although the U.S. has not experienced an officially classified EF5 tornado in over a decade, this does not necessarily mean extreme tornadoes are becoming less frequent, either. The reality is ...

The Twister: Caught in the Storm is a documentary that retrieves the EF5 tornado that leveled Joplin ... A family's experience in the 2004 tsunami is highlighted in this movie (Image via Apple ...