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The Fujita Scale

Tornadoes are measured by the Fujita scale (F-scale), which determine the wind speed by the actual damage it produces:

Scale Number
Name
Mph
F0 Gale Tornado 40-72
F1 Moderate Tornado 73-112
F2 Significant Tornado 113-157
F3 Severe Tornado 158-206
F4 Devistating Tornado 207-260
F5 Incredible Tornado 261-318

What occurs at the Different Scales:

  • F0- Minimal damage to chimneys, shallow trees
    uprooted, and tree branches broken off.
  • F1- Peels surface off of roofs, mobile homes
    overturned, autos pushed off road.
  • F2- Considerable damage; roofs torn off of
    houses, large trees uprooted and/or snapped, light-
    object missiles generated.
  • F3- Brutal damage; roofs and possibly walls torn off, trains overturned, heavy cars lifted off of the ground, most forest trees uprooted.
  • F4- Well-constructed houses leveled, cars thrown and large missiles generated.
  • F5- Strong frame houses lifted off foundations and crumbled, car-sized missiles fly through the air in excess of 100 mph; trees debarked.