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Intensity cannot be determined due to a lack of information. This rating applies to tornadoes that traverse areas with no damage indicators, cause damage in an area that cannot be accessed by a survey, or cause damage that cannot be differentiated from that of another tornado. [3] N/A EF0: 65–85: 105–137 52.82% Minor damage.
F5 damage in Bridge Creek, Oklahoma, from the May 3, 1999, tornado. Following two particularly devastating tornadoes in 1997 and 1999, engineers questioned the reliability of the Fujita scale. Ultimately, a new scale was devised that took into account 28 different damage indicators; this became known as the Enhanced Fujita scale. [11]
Aerial view of EF3 damage in Mayfield, Kentucky, on December 12, 2021, one of several towns impacted by the 2021 Western Kentucky tornado. This is a list of tornadoes which have been officially or unofficially labeled as F4, EF4, IF4, or an equivalent rating during the 2020s decade.
EF4 damage to a residence from the 2011 Tuscaloosa–Birmingham tornado The Windsor–Tecumseh Tornado of 1946 F4/EF4 Tornadoes in the United States 1950–2019. This is a list of tornadoes which have been officially or unofficially labeled as F4, EF4, IF4, or an equivalent rating.
The meteorologists and engineers who designed the EF Scale believe it improves on the F-scale on many counts. It accounts for different degrees of damage that occur with different types of structures, both manmade and natural. The expanded and refined damage indicators and degrees of damage standardize what was somewhat ambiguous.
This is a list of tornadoes which have been officially labeled as F4, EF4, IF4, or an equivalent rating during the 2000s decade. These scales – the Fujita scale, the Enhanced Fujita scale, the International Fujita scale, and the TORRO tornado intensity scale – attempt to estimate the intensity of a tornado by classifying the damage caused to natural features and man-made structures in the ...
The International Fujita scale (abbreviated as IF-Scale) rates the intensity of tornadoes and other wind events based on the severity of the damage they cause. [1] It is used by the European Severe Storms Laboratory (ESSL) and various other organizations including Deutscher Wetterdienst (DWD) and State Meteorological Agency (AEMET).
In the thread, it was noted that one of the EF4 damage indicators would "probably be a D-class structure in the IF rating system, which gives a rating of IF4 when (almost) completely destroyed as seems to be the case here", meaning the 2021 Western Kentucky tornado would have probably been equivalent to at least an IF4 on the International ...