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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]
An F0 or EF0 tornado, the weakest category, damages trees, but not substantial structures. An F5 or EF5 tornado, the strongest category, rips buildings off their foundations and can deform large skyscrapers. The similar TORRO scale ranges from T0 for extremely weak tornadoes to T11 for the most powerful known tornadoes. [12]
The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries, including the United States and France. [1] The EF scale is also unofficially used in other countries, including China and Brazil. [2] [3]
Since 1905, NWS has tracked 13 EF5 tornadoes in Oklahoma, including the devastating 2013 Moore tornado. The tornado's 17-mile destructive path on May 20, 2013, left hundreds injured and nearly ...
The tornado was categorized as an EF1, which is a tornado with speeds of 86 to 110 mph. To rank tornados, meteorologists use the Enhanced Fujita Scale , or EF Scale, to estimate the wind speed of ...
This scale helps categorize each tornado by its intensity and its area, and can estimate the wind speeds associated with the damage caused by the tornado. The EF scale are divided into six categories:
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).
At least two dozen tornadoes struck Iowa and devastated Minden in April. Here's how tornadoes form, and why it's hard to learn more.