Meteorologists say a deadly tornado in North Dakota this summer has been upgraded to a top-of-the-scale EF5, and was the ...

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

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

Two historic, extreme weather events separated by just over 100 miles happened on one July day in the upper Midwest. On July 18, 1996, 29 years ago this evening, a violent tornado roared through the ...

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

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 June 20 tornado near Enderlin, North Dakota, has been upgraded to EF5, the first in the US since 2013. With winds over ...

Tornadoes with the most destructive F5/EF5 rating are a rare beast, but nearly 30 years ago, one such tornado put on a second rare display because of its strange movement. A small, rope tornado ...

New forensic damage analysis confirms Enderlin, ND tornado exceeded 210 MPH winds, ending the longest streak without an EF-5 ...

Teacher captures the moment the EF-5 tornado hit Briarwood Elementary. May 23, 2013— -- Cellphone video recorded by an Oklahoma teacher at Briarwood Elementary School shows the exact moment an ...