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

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

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

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

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

Large and destructive tornadoes are carving paths of destruction across the South for the second day in a row.

An EF0 tornado touched down in Los Angeles County early Thursday morning, causing damage to a Pico Rivera neighborhood, the National Weather Service said.

A monster storm system carrying a high risk tornado threat is barreling through the Southeast after unleashing deadly ...

At least 37 people have died across seven states as powerful storm systems swept through the Midwest and the South.

The original "F-scale" was in use from the 1970s to 2007, while new "Enhanced Fujita (EF) scale" has been in use since 2007. Unlike hurricanes, which are based on the wind speed of a storm as it ...

The FOX23 Severe Weather Team is bringing you "Storm Smart," a special looking back at the record breaking number of tornados ...