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The TORRO tornado intensity scale (or T-Scale) is a scale measuring tornado intensity between T0 and T11. It was proposed by Terence Meaden of the Tornado and Storm Research Organisation (TORRO) , a meteorological organisation in the United Kingdom , as an extension of the Beaufort scale .
The 1764 Woldegk tornado on June 29, 1764, was one of the strongest tornadoes ever documented in history, receiving the unique T11 rating on the TORRO scale along with an F5 rating on the Fujita scale and had winds estimated to be at least 480 kilometres per hour (300 mph).
The TORRO scale, created by the Tornado and Storm Research Organization (TORRO), was developed in 1974 and published a year later. The TORRO scale has 12 levels, which cover a broader range with tighter graduations. It ranges from a T0 for extremely weak tornadoes to T11 for the most powerful known tornadoes.
TORRO has also developed a hailstorm intensity scale. [1] TORRO publishes the semi-professional periodical the International Journal of Meteorology (IJMet) which is composed of a mixture of academic and amateur articles. TORRO tornado watches and warnings are now released to the public via the TORRO forecast page, the TORRO forum, the TORRO ...
Fujita scale (F scale) Enhanced Fujita scale (EF scale) International Fujita scale (IF scale) TORRO scale; List of F5, EF5, and IF5 tornadoes; List of F4, EF4, and IF4 tornadoes. List of F4 tornadoes (1950–1959) List of F4 tornadoes (1960–1969) List of F4 and EF4 tornadoes (2000–2009) List of F4 and EF4 tornadoes (2010–2019)
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 Enhanced Fujita scale is used predominantly in North America. 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 ...
The Fujita scale number of the strongest tornado in the outbreak. This could be an Enhanced Fujita scale, International Fujita scale, or standard Fujita scale, depending on the value provided. Suggested values F0 F1 F2 F3 F4 F5 EFU EF0 EF1 EF2 EF3 EF4 EF5 IF0-IF0 IF0+ IF1-IF1 IF1+ IF2-IF2 IF2+ IF3 IF4 IF5: String: suggested: TORRO scale: torro ...