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

A Pacific storm turned deadly when dry desert winds and Gulf moisture combined over the Plains to fuel dozens of tornadoes ...

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

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

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

Dozens of tornadoes, including 2 EF4 strength storms, raked across 11 states Friday into Saturday, killing two dozen people.

Based on a survey of damage from the severe storms that struck the region on Monday morning, the National Weather Service ...

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

The culprits ranged from dust storms and fires in the Southern Plains to tornadoes in the Mississippi Valley and the South.

Tuesday will mark a somber anniversary, as it will be 100 years since the deadliest tornado in the country’s history ripped ...

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