The most powerful tornado to hit America in 12 years swept this state last summer

The first EF-5 tornado to hit the United States in 12 years was confirmed by the National Weather Service on Monday. It happened in June in North Dakota. The National Weather Service in Grand Forks, N ...
The Bismarck Tribune

Deadly North Dakota tornado reclassified; first EF5 in the country in 12 years

Tornado experts upgraded the deadly June 20 North Dakota twister to the rarest, strongest rating: EF5. With winds over 210 mph, it's the first in the U.S. in years.