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

A deadly tornado that ripped through a rural city in North Dakota in June​ has been upgraded to an EF-5, the National Weather ...

NORTH DAKOTA Deadly tornado classified EF5 A deadly tornado that tore across southeastern North Dakota this summer has been ...

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 mph, the strongest classification of tornado and the first confirmed on ...

EF5 tornadoes, which are the highest level on the Enhanced Fujita Scale used to determine tornado strength, carry winds of at least 201 mph. Tornadoes of this magnitude are a rarity. Only 60 tornadoes ...

The National Weather Service said the EF5 twister in North Dakota packed winds stronger than 200 mph, underscoring risks that ...

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

A deadly tornado in Enderlin, North Dakota, on June 20 has been upgraded to an EF5, marking the first EF5 tornado in the ...

A powerful tornado struck Enderlin, North Dakota, on June 20, causing significant damage and leading to a rare EF5 ...

The National Weather Service increased the official categorization of tornado that hit North Dakota in June to the highest class.

The more than decade-long EF5 tornado drought has come to an end. A tornado that struck Enderlin, North Dakota, on June 20 has been upgraded to an EF5, according to the National Weather Service in ...

It was the strongest classification of tornado and the first confirmed on American soil in a dozen years, meteorologists said Monday.