Meteorologists say 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 Canadian Press on MSN
Tornado in North Dakota was the first at EF5 strength in a dozen years
A deadly tornado that tore across North Dakota this summer has been upgraded to an EF5 with winds over 200 mph (322 kph), the strongest classification of tornado and the first on American soil in 12 ...
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