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

While doing a study of housing in hurricane-prone regions, Saffir realized that there was a need to describe the expected effects of hurricanes based on wind speed. He came up with a scale that ...

Originally created by famed tornado researcher Ted Fujita, the scale takes into account estimated wind speeds, observed damage and damage verified in weather service surveys after tornadoes.