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Tornado intensity is the measure of wind speeds and potential risk produced by a tornado. Intensity can be measured by in situ or remote sensing measurements, but since these are impractical for wide-scale use, intensity is usually inferred by proxies , such as damage.
None of the tornadoes in the United States recorded before February 1, 2007, were re-categorized during and after the transition to the EF Scale. Essentially, there is no functional difference in how tornadoes are rated. The old ratings and new ratings are smoothly connected with a linear formula.
The 1977 Birmingham–Smithfield F5 tornado's damage was surveyed by Ted Fujita and he "toyed with the idea of rating the Smithfield tornado an F6". [13] In 2001, tornado expert Thomas P. Grazulis stated in his book F5–F6 Tornadoes ; "In my opinion, if there ever was an F6 tornado caught on video, it was the Pampa, Texas tornado of 1995 ". [ 14 ]
The TORRO tornado intensity scale (or T-Scale) is a scale measuring tornado intensity between T0 and T11. It was proposed by Terence Meaden of the Tornado and Storm Research Organisation (TORRO) , a meteorological organisation in the United Kingdom , as an extension of the Beaufort scale .
The Enhanced Fujita scale measures a tornado's intensity on a scale of 1 to 5 based on its wind speed estimates and resulting damages.
While this tornado did not receive a rating on a tornado intensity scale, a publication in the Journal of Meteorology by M. W. Roe described the tornado as a “violent whirlwind”, so it is believed to have been equivalent to an F4 tornado. [6] [7] M. W. Roe September 11: 1535 Poland: Lower Silesian: Oleśnica: 5
An EF4 tornado with wind speeds ranging from 166 to 200 mph can cause devastating damage. Most to all walls on a well-built house will likely collapse, and high-rise buildings can sustain ...
The EF-2 rating is according to the Enhanced Fujita scale, which rates tornado intensity on a scale of zero to five based on the damage they cause. An EF-2 is capable of tearing roofs off well ...