The “EF-1” designation refers to the Enhanced Fujita Scale, which ranges from EF-0 to the most powerful EF-5. An EF-1 tornado ...

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

A string of deadly tornadoes, violent dust storms and fast-moving wildfires ripped across several midwestern and southern U.S ...

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

At least two tornadoes in Arkansas have a preliminary rating of EF-4 as part of the tornado outbreak that has claimed dozens ...

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

Tornadoes are classified on the Enhanced Fujita scale, which ranges from EF0 to EF5. Originally created by famed tornado ...

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