The most well, known scale is the Fujita scale, which runs from F0 to F5. In the U.s. it has been replaced by the Enhanced Fujita scale, which, similarly, runs from EF0 to EF5.
The Fujita Scale (replaced by the Enhanced Fujita Scale in 2007) is used to rate the intensity of tornadoes from F0 to F5 based on damage. It gets its name from its creator, Dr. Tetsuya Fujita.
Tornado is the proper term.
The original scale for rating tornadoes is officially the Fujita-Pearson scale, though the Pearson numbers were rarely used. The scale is normally referred to simply as the Fujita scale. In 2007 the United States stopped using this scale in favor of the Enhanced Fujita scale.
Wind strength is normally measured on the empirical Beaufort wind force scale. This scale relates wind speed and the conditions observed on land and at sea, but it measures wind speed rather than force as it is understood scientifically.
Tornadoes in the U.S. are currently classified on the Enhanced Fujita Scale.
The Fujita Scale (replaced by the Enhanced Fujita Scale in 2007) is used to rate the intensity of tornadoes from F0 to F5 based on damage. It gets its name from its creator, Dr. Tetsuya Fujita.
In most cases the intensity of a tornado is never actually measured. Tornadoes are rated based on the severity of the damage they cause. Mobile Doppler radar can measure wind speeds in a tornado, but since such radar cannot measure ground-level winds the measurements are not used in ratings.
There is no particular instrument used for measuring tornado intensity. Ratings are based primarily on damage assessment. Occasionally doppler radar has measure wind speeds inside a tornado, but such measurements are rare.
The Rickter (RICK-tur) scale has been popular for decades to measure the intensity of earthquakes, yet it had its issues. These days the Mercalli scale is most often used by geologists and vulcanologists.
Tornado damage has traditionally been rated on the Fujita scale. However, the United States and Canada now rate tornado damage on the similar Enhanced Fujita scale.
Tornadoes are rated on the Enhanced Fujita scale, which replaced the Fujita scale in 2007.
Richter scale
a decibel
Australian Tropical Cyclone Intensity Scale which is different from the Saffir-Simpson Hurricane Scale.
The Scoville Scale
Its called the enhanced fujita scale...it measures from an EF0 to an EF5 how fast the tornado was spinning. The wind speed is determined by examining damage.
Dr. Tetsuya Theodore Fujita.