F4 tornado damage example
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Mike Branick
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An example of F4 tornado damage. A tornado in Moore, OK on 3 May 1999 demolished this house (foreground) down to a short pile of debris on and around the foundation, with no walls standing. In order for this scene to be rated F5, the debris must have been swept away, leaving behind evidence that the house was well-attached to its slab. [The brick house in the left background suffered F3 damage, with a mixture of inner and outer walls removed.] This tornado caused an immense amount of F4 damage on its path through the southern portion of the Oklahoma City metropolitan area, and several locales of F5 damage.
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Fujitova stupniceFujitova stupnice, někdy též Fujitova–Pearsonova stupnice, je škála sloužící ke klasifikaci tornád. Stupnice byla představena v roce 1971 japonsko-americkým meteorologem Tedem Fujitou z Chicagské univerzity. Fujita na jejím vytvoření spolupracoval s Allenem Pearsonem, šéfem National Severe Storms Forecast Center/NSSFC. Škála byla upravena v roce 1973 tak, aby brala v úvahu i délku a šířku trasy tornáda. .. pokračovat ve čtení