 | Tornado damage to a house in Oklahoma County from the Moore–Choctaw tornado, one of 91 confirmed tornadoes in the May 10–13, 2010 outbreak. The intensity of tornadoes can be measured using the Fujita, Enhanced Fujita, or TORRO scales, based on the amount of damage and estimated wind speeds. The Moore–Choctaw tornado, which killed two people, was initially rated an EF3, indicating significant damage to well-built structures. It was upgraded to an EF4 – capable of leveling even the most robustly built homes – after leveled homes were found in subdivisions that were difficult to access due to damage. Photograph: Win Henderson, FEMA |
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