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The only evidence indicating wind speeds found in the tornado was the damage left behind by tornadoes that struck populated areas. Some believed they reach 400 miles per hour (640 kilometers per hour); others thought they might exceed 500 miles per hour (800 km/h), and perhaps even be supersonic .
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.
The highest wind speed ever measured in a tornado, which is also the highest wind speed ever recorded on the planet, is 301 ± 20 mph (484 ± 32 km/h) in the F5 Bridge Creek-Moore, Oklahoma, tornado which killed 36 people. [120] The reading was taken about 100 feet (30 m) above the ground. [3]
Of these there have been nearly 50 reports of tornadoes. Perhaps the strongest tornado of the outbreak thus far -- an EF4-- hit Bansdall, Oklahoma, on Monday evening with winds estimated up to 200 ...
At least four people were killed and 35 injured by an EF4 tornado that plowed through the center of Greenfield, Iowa, on Tuesday. Peak winds of 185 mph were estimated by the National Weather ...
A preliminary report shows the tornado hit in Underwood, Indiana, at about 4:45 a.m. with estimated peak winds of 90 mph, said Evan Webb, a meteorologist with the National Weather Service of ...
In 2001, tornado expert Thomas P. Grazulis stated in his book F5–F6 Tornadoes; "In my opinion, if there ever was an F6 tornado caught on video, it was the Pampa, Texas tornado of 1995". [14] In 2023, it was announced by the Storm Prediction Center and National Weather Service Norman, Oklahoma that the 1970 Lubbock tornado was originally rated ...
At the end of the report, they said, "the tornado damage rating might have been higher had more wind resistant structures been encountered. Also, the fast forward speed of the tornado had little 'dwell' time of strong winds over a building and thus, the damage likely would have been more severe if the tornado were slower". [206] July 1: 2023 Canada