First EF5 tornado to strike the US in over a decade just confirmed by experts

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

EF5 tornado that killed 3 in North Dakota was the nation’s first in 12 years

Meteorologists say a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, and was the ...