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Tornado damage to a house in Oklahoma County, Oklahoma, hit during the Tornado outbreak of May 10–13, 2010. Tornado intensity is the measure of wind speeds and potential risk produced by a tornado.
A tornado was reported within the city, causing no known damage. F1: Limeira, Brazil [95] March 3, 2013 0 A large F1 tornado caused serious damage within the city. F0: Brasília [96] October 1, 2014 0 (0 injured) Brief landspout F0: Asunción, Paraguay [97] December 26, 2015 0 A weak tornado downed some branches. F2: Los Ángeles, Chile [98 ...
In late 2023, American meteorologist and tornado expert Thomas P. Grazulis created the Outbreak Intensity Score (OIS) as a way to rank tornado outbreaks. [1] [2] For the score, only significant tornadoes are counted: F2/EF2 tornadoes receive 2 points each, F3/EF3 tornadoes receive 5 points each, F4/EF4 tornadoes receive 10 points each, and F5/EF5 tornadoes receive 15 points each. [1]
This same classification is also used by the National Weather Service. The National Weather Service of Quad Cities use a modified EF scale wording, which gives a new term for each rating on the scale, going from weak to catastrophic. [55] The table shows other variations of the tornado rating classifications based on certain areas.
A tornado watch is not considered as serious as a warning. Tornadoes are measured on the Enhanced Fujita Tornado Intensity Scale, known as EF. The scale, which starts with a severity of EF-0 (for ...
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
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.
Most of Europe, on the other hand, uses the TORRO tornado intensity scale (or T-Scale), which ranks tornado intensity between T0 and T11; F4/EF4 tornadoes are approximately equivalent to T8 to T9 on the T-Scale. Tornadoes rated IF4 on the International Fujita scale are also included on this list. Violent tornadoes, those rated F4/EF4 and F5/EF5 ...