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The Enhanced Fujita scale replaced the decommissioned Fujita scale that was introduced in 1971 by Ted Fujita. Operational use began in the United States on February 1, 2007, followed by Canada on April 1, 2013, who uses a modified version known as the CEF-scale.
The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.
The Fujita Scale is a well known scale that uses damage caused by a tornado and relates the damage to the fastest 1/4-mile wind at the height of a damaged structure. Fujita's scale was designed to connect smoothly the Beaufort Scale (B) with the speed of sound atmospheric scale, or Mach speed (M).
Enhanced F Scale for Tornado Damage. An update to the the original F-scale by a team of meteorologists and wind engineers, to be implemented in the U.S. on 1 February 2007.
An Enhanced Fujita (EF) Scale, developed by a forum of nationally renowned meteorologists and wind engineers, makes improvements to the original F scale. This EF Scale has replaced the original F scale, which has been used to assign tornado ratings since 1971.
After a tornado has passed, experts assess the damage, estimate wind speeds, and categorize tornadoes according to the Enhanced Fujita Scale, with ratings from EF-0 to EF-5.EF-0. Wind gusts are estimated between 105 and 137 kilometers per hour (65 and 85 miles per hour).
The EF Scale was revised from the original Fujita Scale to reflect better examinations of tornado damage surveys so as to align wind speeds more closely with associated storm damage. The new scale has to do with how most structures are designed.
May 23, 2013 · By looking at the amount of damage caused to different types of structures, scientists assign the storm an Enhanced Fujita scale classification. From the amount of damage they see, they then...
Enhanced Fujita Scale • The EF-scale was developed at Texas Tech Univ. involving many US interests • Has much improved wind speed / wind damage correlation with large number of damage indicators while consistent with existing US database • Adopted for use in the United States in 2007, Sills and McCarthy have been
May 1, 2023 · CNN — The strength of tornadoes is rated on the Enhanced Fujita, or EF, Scale. Know the difference between a tornado watch, a tornado warning and a tornado emergency. The scale runs from 0 to...
