The most rare and extreme form of tornado struck eastern North Dakota in June, but experts just determined how strong it ...

The nation's longest "drought" between EF5 tornadoes has come to an end, scientists from the National Weather Service ...

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

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

Tornadoes are a relatively rare event. Only a tiny percentage of thunderstorms ever go on to produce a tornado. No two twisters are alike—and some of those storms are truly bizarre. From twin ...

FARGO, N.D. (Valley News Live) - June 20 marks 68 years since a massive tornado, which has since been commonly referred to as the “Fargo Tornado” carved a nine-mile path through Fargo and Moorhead.

Meteorologists said this week that a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, and was the first on American soil in 12 years.

The National Weather Service said the EF5 twister in North Dakota packed winds stronger than 200 mph, underscoring risks that ...

For the first time in 12 years, the United States has recorded an EF5 tornado, the most powerful type of twister on the Enhanced Fujita wind and damage scale, the National Weather Service confirmed ...