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The old scale lists an F5 tornado as wind speeds of 261–318 mph (420–512 km/h), while the new scale lists an EF5 as a tornado with winds above 200 mph (322 km/h), found to be sufficient to cause the damage previously ascribed to the F5 range of wind speeds.
Frame-home structural damage cannot exceed total destruction and debris dispersal, which constitutes F5 damage. A tornado with wind speeds greater than 319 miles per hour (513 km/h) is theoretically possible, and the 1999 Bridge Creek-Moore Tornado may have been such an event, but no such wind speed has ever been recorded and that measurement ...
5 days ago · Dr. Fujita's original scale, which ranges from F0 to F5, is based upon the type and severity of damage the tornado produced. At that time, there were very few actual measurements of tornado wind ...
Only when they have enough data, meteorologists are then able to properly determine the Fujita scale category (F1-F5) of a given tornado. Tornado Wind Speed Scale (Fujita) Categories. F0 Tornado Damage. The first measurement grade “F0” refers to tornadoes that cause no or only slight damage. Storm Chasing. The Worst & Biggest Tornadoes Ever [LIST]
Jan 1, 2001 · F5 (Incredible) Dr. Fujita's goals in his research in developing the F-Scale were categorize each tornado by its intensity and its area; estimate a wind speed associated with the damage caused by the tornado; Dr. Fujita and his staff showed the value of the scale's application by surveying every tornado from the Super Outbreak of April 3-4, 1974.
From that, a rating (from EF0 to EF5) is assigned. The EF Scale was revised from the original Fujita Scale to reflect better examinations of tornado damage surveys so as to align wind speeds more closely with associated storm damage. The new scale has to do with how most structures are designed.
The version used today—the Enhanced Fujita Scale—ranges from EF0 tornadoes with winds of 65 to 85 miles an hour, to EF5 tornadoes with winds exceeding 200 miles an hour. The U.S. National Weather Service has rated tornadoes according to the Fujita Scale since 1973.
