Fujita Scale

  • The Fujita scale (F-Scale), or Fujita–Pearson scale, is a scale for rating tornado intensity, based primarily on the damage tornadoes inflict on human-built structures and vegetation.
  • The original Fujita scale was developed  by a prominent Japanese-American Dr. T. Theodore Fujita (1920-1998) and was put into use in 1971.
  • His research at the University of Chicago on severe thunderstorms, tornadoes, hurricanes and typhoons revolutionized knowledge of each.
  • The scale was enhanced in 2007, with rankings running from Enhanced Fujita – 0 through 5. The ratings are based on the amount and type of wind damage.

Fujita scales

Tornado

Dr Theodore Fujita 1920-1998

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