US’s strongest tornado in 12 years rips across North Dakota and kills three

Deadly tornado upgraded to EF-5, first in US to get that classification in years, and at its largest was 1.05 miles wide

A deadly tornado that tore across North Dakota this summer has been upgraded to an EF-5, the strongest kind of tornado and the first one to attain that classification on US soil in 12 years.

The tornado on 20 June in Enderlin caused significant damage across the region and killed three people. The tornado touched down on the ground for just over 12 miles (19km), and at its largest, was 1.05 miles wide (1.69km).