Fujita scale

Fujita scale
Scale Speed Damage
F0 < 73 mph Light
F1 73–112 mph Moderate
F2 113–157 mph Considerable
F3 158–206 mph Severe
F4 207–260 mph Devastating
F5 261–318 mph Incredible

The Fujita scale (F-Scale; /fuˈtə/), 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. The official Fujita scale category is determined by meteorologists and engineers after a ground or aerial damage survey, or both; and depending on the circumstances, ground-swirl patterns (cycloidal marks), weather radar data, witness testimonies, media reports and damage imagery, as well as photogrammetry or videogrammetry if motion picture recording is available. The Fujita scale was replaced with the Enhanced Fujita scale (EF-Scale) in the United States in February 2007. In April 2013, Canada adopted the EF-Scale over the Fujita scale along with 31 "Specific Damage Indicators" used by Environment Canada (EC) in their ratings.[1][2]

  1. ^ "Fujita Tornado Damage Scale". spc.noaa.gov. Retrieved May 27, 2017.
  2. ^ "Fujita Scale – Tornado Damage Scale". factsjustforkids.com. Retrieved June 14, 2019.

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