Three people were killed in the tornado, which produced 210 mph winds, leveling homes and tossing fully-loaded box cars.

After weeks of engineering analysis, informed largely by a new technique developed by Western's Canadian Severe Storms Laboratory (CSSL), a tornado ...

This is the third F-5/EF-5 in the state of North Dakota since records started being kept in 1953. Violent (EF-4 and EF-5) ...

The first EF5 tornado was confirmed in North Dakota, here's a history and the last F5 tornadoes to hit Michigan.

The deadly cyclone that struck on Friday in El Reno, Oklahoma, was the second EF5 tornado in less than two weeks to wreak devastation on the state. It was also the largest twister ever recorded in the ...

A teen, who survived a devastating EF5 tornado in Joplin, Missouri, in 2011, is speaking out all these years later. The devastating storm killed 160 and injured more than 1,000. The devastation was so ...