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

AUSTIN (KXAN) — A 12-year “drought” of EF5 tornadoes has ended, after the National Weather Service upgraded a tornado in North Dakota to EF5 status. The tornado touched down near Enderlin, North ...

The nation's longest "drought" between EF5 tornadoes has come to an end, scientists from the National Weather Service ...

Meteorologists said this week that 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.

A tornado hit Enderlin, North Dakota, with winds reaching at least 210 mph. The tornado has been classified as an EF5, the first since 2013, due to new research. The National Weather Service may ...

Before this twister was upgraded, the last EF5 in the United States had occurred in 2013 when a devastating tornado in Moore, Okla., killed 24 people. While North Dakota is far from Tornado Alley's ...

The last recorded EF5 tornado was on May 20, 2013, in a town outside Oklahoma City, killing 24 people and injuring more than 200 others. That tornado tore through hundreds of homes, a school, hospital ...

For the first time in 12 years, the United States has recorded an EF5 tornado, the most powerful type of twister on the Enhanced Fujita wind and damage scale, the National Weather Service confirmed ...

Initially, this tornado was rated an EF3. But due to work from the Northern Tornadoes Project of Western University in ...

WASHINGTON — An EF5 tornado struck North Dakota this year, the National Weather Service confirmed Monday, marking the first tornado of that strength in more than a decade on American soil. The ...

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 (322 kph), the strongest classification of tornado and the first ...