Despite the number of tornadoes increasing in the U.S., it’s been over 11 years since the last EF5 was recorded. But does ...

Instead, after a tornado hits, the U.S. National Weather Service uses a rating system it adopted in 1973 called the Fujita Scale. Devised by meteorologist Theodore Fujita in 1970, the F-scale ...

tornado rating scale and the newer Enhanced Fujita (EF) scale. Under the EF scale, a 200 mph wind gust that destroys a normal single-family home falls within the EF4 category rather than EF5.

It's one of history's earlier documented tornado swarms. Here's how deadly and damaging it was and why it's called an "enigma ...

A possible tornado swept through a swath of north-central Tennessee on Thursday night, killing a mother and daughter and injuring at least three other people as it caused severe property damage, ...

There have now been 22 tornadoes in New York this month, shattering the previous record of 13 set in 1992. It also brings New ...

Explainer: The wind speed of the Mangawhai tornado is similar to one that's occurred before - RNZ has been looking at what we ...

Two tornadoes moved through eastern Tennessee, leaving a mother and daughter dead and injuring three other people, officials ...

Research published by the American Meteorological Society suggests the more than decade long drought of the strongest tornadoes is due to stricter use of damage ratings versus any type of change to ...

The most prone tornado regions in Canada are the Prairie provinces, Ontario, and Quebec. The Enhanced Fujita (EF) scale is used to rate tornadoes based on the severity of the damage they produce ...