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 ...

A dangerous tornado outbreak featuring the potential for "multiple violent" tornadoes threatens much of the Deep South ...

Researches found little evidence that tornadoes were getting weaker. Instead, it appears that a subjective tornado grading system is to blame.

Large tornadoes are carving paths of destruction across the South for the second day in a row as a deadly storm system churns ...

In a Facebook post Saturday afternoon, the Cedar Lake Fire Department said preliminary investigation suggests a EF0-EF1 ...

A monster storm system carrying a high risk tornado threat is barreling through the Southeast after unleashing deadly ...

Several tornado warnings have been issued in Missouri, while Georgia's governor declares a state of emergency.

A quirky aspect of the way we measure twisters helps explain why there hasn't been a top-tier-rated tornado in 12 years.

Severe weather season usually begins to ramp up in March and lasts through the start of summer. The dramatic increase in sun ...