Meteorologists from the National Weather Service office in Grand Forks estimated the tornado’s winds reached 210 mph, ...

Meteorologists said this week that a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, ...

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

A deadly tornado that tore across southeastern North Dakota this summer has been upgraded to an EF5 with winds topping 200 ...

This is the third F-5/EF-5 in the state of North Dakota since records started being kept in 1953. Violent (EF-4 and EF-5) ...

Since the National Weather Service began using Enhanced Fujita scale in 2007, there have been 10 tornadoes categorized as EF5 ...

A rare, monstrous EF5 tornado that struck the United States more than three months ago was the first of its kind in more than ...

Oklahoma is no stranger to tornadoes, but you never want to get too close to one. When a dust devil spins up, it's a whole lot safer to go up to the vortex and get video.

Most tornadoes and severe weather spawn during this turbulent time in North America's atmosphere, but it's not the only time ...

Some homes in the city of Sallisaw, in the eastern part of the state, were damaged, as were trees, power lines and poles, ...