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 ...

So far, they've found that the tornado spanned 1.3 miles -- the length of more than 22 football fields lined up end-to-end -- carving a 17-mile path of destruction.

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 ...

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 ...

NORMAN, Okla. – Research recently published in the Bulletin of the American Meteorological Society suggests that the record-long drought of EF5 tornadoes is due to stricter use of damage ratings ...

The other, which had the most severe damage near Diaz in Jackson County, was determined to be a high-end EF4 tornado with maximum winds of 190 mph. For comparison, an EF5 tornado has winds of at ...