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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 .
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.
This is a list of tornadoes by their official and unofficial width. The average width of a tornado according to the National Weather Service is 50 yards (46 m). [ 1 ] The official widest tornado in history is the 2013 El Reno tornado , which a confirmed width of 2.6 miles (4.2 km), with the World Meteorological Organization believing the width ...
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 strength of tornadoes is rated on the Enhanced Fujita, or EF, 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.
This is a list of tornadoes which struck primary and secondary schools or post secondary colleges or universities, organized by the tornado’s intensity. These scales—the Fujita scale , the Enhanced Fujita scale , and the International Fujita scale —are used to rate and estimate the done by a tornado.
Eight of the tornado warnings issued during the event by the NWS offices in Memphis, Tennessee, and Paducah, Kentucky were tornado emergency declarations, the most issued during the month of December. EF4 damage occurred in or near the communities of Cayce, Mayfield, Cambridge Shores, Princeton, Dawson Springs, and Bremen.