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

Each tornado touched down in Saturday's early hours, with the last and smallest observed at 5:14 a.m. An EF-1 ...

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

A deadly storm will push toward the East Coast on Sunday after days of destruction from more than 60 tornadoes, wildfires and ...

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

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

The National Weather Service has confirmed at least four tornado touchdowns occurred in the Chicago area during a severe weather outbreak Friday.

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

The National Weather Service on Saturday confirmed at least three EF-2 tornadoes touched down in southern Indiana.

Parts of the city had been urged to evacuate as a powerful system brought rain and snow up and down the state.