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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. None of the tornadoes in the United States recorded before February 1, 2007, were re ...
The expanded and refined damage indicators and degrees of damage standardize what was somewhat ambiguous. It also is thought to provide much better estimates of wind speeds and sets no upper limit on the wind speeds for the highest level, EF5. Environment Canada began using the Enhanced Fujita scale in Canada on April 1, 2013. [22]
These warnings use a 1-minute sustained wind speed and can be compared to the Saffir–Simpson hurricane wind scale, however, regardless of intensity in this basin the JTWC labels all systems as tropical cyclones with TC numbers (plus any parenthesized names or placeholders, like typhoons and North Indian Ocean cyclones above). [18]
Learn about the formation and characteristics of hurricanes, typhoons and tornadoes.
The Enhanced Fujita scale measures a tornado's intensity on a scale of 1 to 5 based on its wind speed estimates and resulting damages.
Tropical cyclones can attain some of the lowest pressures over large areas on Earth. However, although there is a strong connection between lowered pressures and higher wind speeds, storms with the lowest pressures may not have the highest wind speeds, as each storm's relationship between wind and pressure is slightly different. [1]
An EF1 tornado has wind speeds ranging from 86 to 100 mph. An EF2 tornado has wind speeds ranging from 111 to 135 mph, and winds of that force can cause some significant damage.
Of the 21 hurricanes currently considered to have attained Category 5 status in the eastern Pacific, only 5 had wind speeds at 175 mph (78 m/s; 152 kn; 282 km/h) or greater (Patsy, John, Linda, Rick, and Patricia). Only 3 had wind speeds at 180 mph (80.5 m/s; 156 kn; 290 km/h) or greater (Linda, Rick, and Patricia).