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I heard the Oklahoma City tornado was almost “F6.” Is that a real level on the original F-scale?

April 26, 2017f-scale F6 heard level oklahoma city original tornado

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I heard the Oklahoma City tornado was almost “F6.” Is that a real level on the original F-scale?

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Only in untested theory. Fujita plotted hypothetical winds higher than F5; but as mentioned in the previous answer above, they were only guesses. Even if the winds measured by portable Doppler radar (32 meters above ground level, roughly 302 mph) had been over 318 mph, the tornado would still be rated “only” F5 since F5 is the most intense possible damage level. On the Enhanced F-scale, there is no such thing as “F6.