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Most UK tornadoes are T6 or below with the strongest known UK tornado estimated as a T8 (the London tornado of 1091). For comparison, the strongest detected winds in a United States tornado (during the 1999 Oklahoma tornado outbreak) would be T11 using the following formulas: v = 2.365 (T+4) 3/2 m/s v = 8.511 (T+4) 3/2 km/h v = 5.289 (T+4) 3/2 mph
In the U.S., F0 and F1 (T0 through T3) tornadoes account for 80% of all tornadoes. The rate of occurrence drops off quickly with increasing strength—violent tornadoes (F4/T8 or stronger), account for less than one percent of all tornado reports. [6] Worldwide, strong tornadoes account for an even smaller percentage of total tornadoes.
These tornado outbreaks had their strongest tornado rate as an F3 on the Fujita scale or an EF3 on the Enhanced Fujita scale. Pages in category "F3 and EF3 tornadoes" The following 2 pages are in this category, out of 2 total.
An "EF-Unknown" (EFU) category was later added for tornadoes that cannot be rated due to a lack of damage evidence. [4] As with the Fujita scale, the Enhanced Fujita scale is a damage scale and only an estimate for actual wind speeds.
So far the National Weather Service has estimated 13 tornadoes hit Middle TN Saturday. Here's a look at how tornadoes are ranked, windspeeds and more. Tennessee tornadoes: What classifies as one ...
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]
Some of the most notorious twisters in U.S. history were wedge tornadoes, including the EF5 that leveled Joplin, Missouri, on May 22, 2011, and the El Reno tornado, which was a jaw-dropping 2.6 ...
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