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For comparison, the strongest detected winds in a United States tornado (during the 1999 Oklahoma tornado outbreak) would be T11 using the following formulas: v = 2.365 (T+4) 3/2 m/s v = 8.511 (T+4) 3/2 km/h v = 5.289 (T+4) 3/2 mph v = 4.596 (T+4) 3/2 kn. where v is wind speed and T is TORRO intensity number. Wind speed is defined as a 3-second ...
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.
Near the tornado's peak intensity, they recorded a wind speed of 115–120 meters per second (260–270 miles per hour; 410–430 kilometers per hour). Though the portable radar had the uncertainty of ±5–10 metres per second (11–22 mph; 18–36 km/h), this reading was probably within the F5 range, confirming that tornadoes were capable 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". [13] In 2023, it was announced by the Storm Prediction Center and National Weather Service Norman, Oklahoma that the 1970 Lubbock tornado was originally rated ...
The International Fujita scale (abbreviated as IF-Scale) rates the intensity of tornadoes and other wind events based on the severity of the damage they cause. [1] It is used by the European Severe Storms Laboratory (ESSL) and various other organizations including Deutscher Wetterdienst (DWD) and State Meteorological Agency (AEMET).
The scale ranks tornadoes from F0 to F5, with F0 being the least intense and F5 being the most intense. F4 tornadoes were estimated to have had maximum winds between 207 mph (333 km/h) and 260 mph (420 km/h). [3] [a] Following two particularly devastating tornadoes in 1997 and 1999, engineers questioned the reliability of the Fujita scale.
Timmer also noted that estimated wind speeds inside the tornado reached about 160-170 mph. The full data was released online to help aid further research from the historic intercept. Wow!
This is a list of tornadoes which have been officially labeled as F4, EF4, IF4, or an equivalent rating during the 2000s decade. These scales – the Fujita scale, the Enhanced Fujita scale, the International Fujita scale, and the TORRO tornado intensity scale – attempt to estimate the intensity of a tornado by classifying the damage caused to natural features and man-made structures in the ...