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University of Chicago meteorologist Ted Fujita devised the Fujita Scale, the internationally accepted standard for measuring tornado severity. His goal was to create categories that could separate weak tornadoes from strong ones.
The Fujita scale (F-Scale; / f u ˈ dʒ iː t ə /), or Fujita–Pearson scale (FPP scale), is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation.
ScaleWind Speed Estimate[7](mph)Wind Speed Estimate[7](km/h)Frequency[15]F040–7264–11644.14%F173–112117–18034.24%F2113–157181–25316.17%F3158–206254–3324.35%Tornadoes are rated by their intensity and the damaged they cause to vegetation and human created structures. The Fujita scale (F-Scale), also known as the Fujita-Pearson scale, is a tornado scale that was introduced in 1971 by Tetsuya Fujita.
The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries, including the United States and France. [1] The EF scale is also unofficially used in other countries, including China. [2]
ScaleWind Speed Estimate[17](mph)Wind Speed Estimate[17](km/h)Frequency[18]EFUN/AN/A3.11%EF065–85105–13752.82%EF186–110138–17732.98%EF2111–135178–2178.41%The EF Scale is the standard way to measure tornadoes based on wind damage. The original Fujita Scale (or F Scale) was developed by Dr. Theodore Fujita. All tornadoes, and other severe local windstorms, were assigned a number according to the most intense damage caused by the storm.
May 4, 2024 · T he Enhanced Fujita Scale, love it or hate it, is our current system for rating the hundreds of tornadoes that occur each year across the United States. To much chagrin, it rates...
The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.
