Tornados can come in a variety of terrifying shapes and sizes. Here are five of the most terrifying forms tornados can come ...

A recent study explores the puzzling decline in EF5 tornadoes, contributing it to more strict criteria in the Enhanced Fujita scale introduced in 2007.

Despite the number of tornadoes increasing in the U.S., it’s been over 11 years since the last EF5 was recorded. But does that mean the most violent tornadoes are disappearing? A new study gets ...

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 ...

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 ...

Eleven years after a tornado devastated Moore, Okla., it remains the most recent tornado to be rated EF5, the strongest possible rating. The 11-year gap is the longest since official U.S. records ...

The recent lack of EF5 tornadoes brings to mind to the “major hurricane” landfall drought that ended several years ago. After Hurricane Wilma struck southwest Florida in 2005, there wasn’t a ...

Twelve years ago, the last EF5 tornado to hit the United States tore through Moore, Oklahoma. The violent storm carved a path of destruction through neighborhoods, killing 24 people and injuring ...

She survived the last EF5 tornado at age 8. 12 years later, she's studying to be a meteorologist. Aria Vargyas was just 8 years old when her school, Briarwood Elementary, collapsed around her.

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 ...