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

The deadliest twister in recorded U.S. history struck 100 years ago Tuesday, touching down in southeastern Missouri and ...

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

Modern standards qualify the so-called Tri-State Tornado as an F5, a mile-wide funnel with wind ... debris straight ahead/Death seems to come to every door/The strong and weak, the rich and ...

A severe weather outbreak is poised to strike the Deep South, with a high risk of violent tornadoes expected across parts of ...

"As we illustrate in the paper, every single tornado of the EF-scale rating era ... that several of these tornadoes would have been rated F5 using the legacy Fujita scale." Thus, the lack of ...

Modern standards qualify the so-called Tri-State Tornado as an F5, a mile-wide funnel with wind ... debris straight ahead/Death seems to come to every door/The strong and weak, the rich and ...

(NEXSTAR) – Tornadoes can (and have) hit every U.S. state, but the area nicknamed Tornado Alley is probably where your mind goes when you think of dangerous twisters. This year, that’s not be ...

The tornado grew in intensity. It was rated an F5 on the Fujita Scale, with winds estimated from 261 to 318 miles per hour. Hundreds of homes and nearly two dozen businesses were damaged or ...