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 ...

Mile-wide tornado that hit North Dakota in June was a monster EF5, the first in 12 years

The storm, which killed three people and tossed train cars hundreds of feet, was nearly a mile wide and carved a 12-mile path ...