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 ...

However, the most powerful tornadoes, classified as EF5, make up less than 1% of all tornadoes in the United States, and it has been nearly 12 years since one touched down. There have been many ...

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 ...

It may be hard to believe that with an average of 1,200 tornadoes each year in the United States, we haven’t seen an EF5-rated twister in more than 11 years. But that doesn’t mean the number ...

Note: This video is from May 2011. JOPLIN, Mo. – Almost 14 years after the deadly EF5 tornado tore through Joplin, Missouri, Netflix released a documentary Wednesday highlighting the immense ...