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

After over 12 years, the EF5 tornado drought in the U.S. has come to an end. A tornado that struck Enderlin, North Dakota, in June was just upgraded to an EF5. Find the details here.

A deadly tornado that tore across North Dakota this summer has been upgraded to an EF5 with winds over 200 mph, the strongest ...

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

There hadn’t been an EF5 — the most intense on the five-point Enhanced Fujita Scale — anywhere on the planet for more than 12 years, dating back to an Oklahoma tornado on May 20, 2013. And then on ...

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

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 ...

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.

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 ...