The Enhanced Fujita scale (abbreviated as EF-Scale) rates tornado intensity based on the severity of the damage they cause. It is used in some countries, including the United States and France. [ 1 ] The EF scale is also unofficially used in other countries, including China and Brazil.

2021年10月21日 · While (E)F6 tornadoes may not be impossible, and the categorization does theoretically exist... in practicality, there is no need for such a value, as the damage would be complete whether in an (E)F5 or (E)F6+.

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.

The Enhanced Fujita Scale or EF Scale, which became operational on February 1, 2007, is used to assign a tornado a 'rating' based on estimated wind speeds and related damage.

2024年5月4日 · This is why a measurement system for estimating the intensity of tornadoes after their impact was devised, a system known today as the Enhanced Fujita Tornado Intensity Scale.

The EF scale will continue to rate tornadoes on a scale from zero to five, but ranges in wind speed will be more accurate with the improved rating scale.

Enhanced F Scale for Tornado Damage. An update to the the original F-scale by a team of meteorologists and wind engineers, to be implemented in the U.S. on 1 February 2007.