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.

The deadliest category of tornado has reappeared in the United States after more than a decade, as the Enderlin tornado has ...

The National Weather Service on Monday released a new report confirming the first EF-5 tornado since May 2013. The tornado, ...

The tornado carried fully loaded train cars nearly 500 feet in Enderlin, North Dakota, on June 20th. It's the first EF-5 tornado to strike the U.S. since 2013.

From bone-chilling blizzards and hurricane-force winds to devastating droughts and biblical-style floods, these are the worst weather events the world has experienced in the last century.

The tornado watch covers 13 counties in northern and central Arkansas, along with nine counties in eastern Oklahoma.

Most tornadoes and severe weather spawn during this turbulent time in North America's atmosphere, but it's not the only time you can spot a twister in Oklahoma. Autumn tornadoes are rare, but there's ...

Tornado experts upgraded the deadly June 20 North Dakota twister to the rarest, strongest rating: EF5. With winds over 210 mph, it's the first in the U.S. in years.

Tulsa is home to two of the deadliest stretches of road in Oklahoma, according to data analyzed by Oklahoma Injury Law Firm. Their analysis showed I-244 and I-44 accounted for two of the most deadly ...

A deadly tornado that tore across North Dakota this summer has been upgraded to an EF5 with winds over 200 mph, the strongest classification of tornado and the first on American soil in 12 years, ...