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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]
The 3D structure of the tornado has been analyzed in a 2005 article in the Journal of the Atmospheric Sciences by Wen-Chau Lee and Joshua Wurman. [17] In 2024, it was published that the radar did measure winds of approximately 257 mph (414 km/h) approximately 30 m (98 ft) above the radar level. [11] F5 May 3, 1999: Bridge Creek, Oklahoma
None of the tornadoes in the United States recorded before February 1, 2007, were re-categorized during and after the transition to the EF Scale. Essentially, there is no functional difference in how tornadoes are rated. The old ratings and new ratings are smoothly connected with a linear formula.
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.
As the Dominator 3 approached the tornado, video captured by Timmer showed the roaring size of the tornado along the Nebraska Sandhills. Storm Chaser Jordan Hall was in the vehicle with Timmer as ...
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 version was based on a 12-step rating scale. Over the next few years, dozens of tornadoes would be rated on this version of the scale. Most notably, the 2021 South Moravia tornado received a rating (IF4) and full damage survey on the IF-scale conducted by ESSL, the Czech Hydrometeorological Institute and four other organizations. [2]
A funnel cloud was spotted along a highway in Flora, Illinois, on Thursday, May 6, amid severe thunderstorm and tornado warnings for Clay County.Footage shared by Raven Torres, who said it was ...