Caught in the Storm tells the story of a deadly EF5 tornado in Joplin, Missouri, and here's why storms are classified this ...

Tornado classifications have evolved since the original Fujita (F scale) was developed in 1971. Under the original F scale, an F5 rating was given as follows: “Whole frame houses tossed off ...

Spring has officially arrived in the Northern Hemisphere and the tornado season, especially in the U.S. east of the Rockies, has been ramping up. From March 13-17, over 100 twisters were reported that ...

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 ...

This new scale includes more types of structures and vegetation along with the differences in construction quality. It isn't as subjective as the original Fujita scale was. Also, an EFU category ...

The EF Scale became operational in 2007 and was revised from the original Fujita Scale, the NWS said. When weather officials survey tornado-related damage, it is compared to the list of 28 Damage ...

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 ...