Initially, this tornado was rated an EF3. But due to work from the Northern Tornadoes Project of Western University in ...

MOLINE, Ill. — For the first time in more than a decade, the United States has recorded an EF5 tornado, which is the strongest classification. But the newly confirmed rating may have implications that ...

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 mph, the strongest classification of tornado and the first confirmed on ...

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.

A tornado that killed three people in North Dakota this summer was upgraded Monday to an EF5, the first such tornado in the U.S. in 12 years. Level 5 is the highest rating on the Enhanced Fujita scale ...

A tornado hit Enderlin, North Dakota, with winds reaching at least 210 mph. The tornado has been classified as an EF5, the first since 2013, due to new research. The National Weather Service may ...