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The Xenia, Ohio, F5 tornado of April 3, 1974.This was one of two tornadoes to receive a preliminary rating of F6, which was downgraded later to a rating of F5. [1]This is a list of tornadoes which have been officially or unofficially labeled as F5, EF5, IF5, T10-T11, the highest possible ratings on the various tornado intensity scales.
The wind speeds on the original scale were deemed by meteorologists and engineers as being too high, and engineering studies indicated that slower winds than initially estimated cause the respective degrees of damage. [50] The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a ...
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 ]
On May 27, 1997, a large and slow-moving F5 tornado caused catastrophic damage across portions of the Jarrell, Texas area. The tornado killed 27 residents of the town, mainly in a single subdivision, and inflicted approximately $40 million (1997 USD) in damages in its 13-minute, 5.1 miles (8.2 km) track.
A unique feature of the International Fujita scale compared to the Fujita or Enhanced Fujita scale is a new damage indicator based on measured wind speeds. For the IF scale , only wind speeds measured at or below 10 metres (11 yd) can be used to determine a rating.
There, the tornado caused catastrophic damage to a third of the city. In all, 288 homes were destroyed and about 200 sustained at least some damage. Many of the homes were swept away in a 15-square-block section of the city, and peak damage approached F5 intensity.
While there are caveats to rating tornadoes by their damage, these F/EF5 tornadoes are rare, particularly in December.Of the 59 such tornadoes since 1950 to achieve that rating, only the 1957 ...
A series of at least four tornadoes hit the Southeastern United States during March 3-4, 1966. The worst event was a violent and long-lived F5 tornado, dubbed the Candlestick Park tornado after the name of a recently opened Jackson, Mississippi shopping center that was leveled by the storm. [2]