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

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

A deadly tornado outbreak ripped through the Midwest and South over the weekend, leaving destruction, power outages and ...

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

Firefighter Josh Pate was on duty Saturday when a tornado tore through his home, where his wife and children prayed for safe ...

The batch of tornados that cut across the Southwest over the weekend destroyed homes in an Arkansas community that also faced ...

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

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

The National Weather Service in St. Louis has confirmed three tornadoes hit the St. Louis area during Friday's storms, ...

In terms of strength of tornadoes, we're looking at some brief spin-up tornadoes, but an EF2 can't be ruled out for Friday and Saturday." According to the Enhanced Fujita Scale, an EF2 tornado packs ...