Caught in the Storm tells the story of a deadly EF5 tornado in Joplin, Missouri, and here's why storms are classified this ...

The Enhanced Fujita Scale provides an estimated range of a tornado's wind speeds, based on the tornado's damage.

One question you may ask yourself is how tornadoes are measured? It's with the Enhanced Fujita (EF) scale which is gives a ...

Tornadoes in Washington state are relatively rare, but they do happen. Here's what to know if a twister touches down near you ...

Severe weather could knock Oregon and Washington with winds over 60 miles per hour and hail larger than golf balls.

Tornadoes form by an extreme spinning of air caused by a mixture of heat, humidity and changes in air. Here's how they all ...

The process of tornado formation begins with colliding air masses that create instability in the atmosphere, producing ...

MOLINE, Ill. — A new study published by the American Meteorological Society has shed light on a puzzling phenomenon: The United States has not logged an EF5 tornado, the most violent category ...

NWS rated Monday's Woodville, NC tornado as a high-end EF-1 tornado. Here's a deeper dive into the Enhanced Fujita scale.