Tornadoes are rated from F0 to F5 on the Fuijta scale (EF0 to EF5 as of 2007 in the U.S.). These ratings are based on damage.
F0, light damage: minor roof damage, gutters knocked down, tree limbs broken, shallow rooted trees toppled.
F1, moderate damage: roofs of frame homes badly stripped of material, trailers severely damage and overturned, windows broken.
F2, significant damage: Roofs torn from frame houses, mobile homes completely destroyed, cars lifted.
F3, severe damage: roofs and walls torn from well built houses, cars thrown, most trees uprooted.
F4, devastating damage: well built houses leveled, trees stripped of bark, poorly anchored buildings moved off foundations.
F5, incredible damage: well built houses swept away, foundations wiped clean.
The scale was developed by Dr. Tetsuya Fujita at the University of Chicago in 1971. Ths highest rating is F5.
Tornadoes are rated on the Enhanced Fujita scale, which replaced the Fujita scale in 2007.
Tornadoes are rated on the Enhanced Fujita scale, which uses damage sevrity to asses the intensity of a tornado.
Tornadoes in the U.S. are currently classified on the Enhanced Fujita Scale.
The Fujita scale is not a weather event, it is a system of rating tornadoes. So thet Fujita scale does not have its own weather conditions.
Less than 1% of tornadoes earn a violent rating (F4 or F5) on the Fujita Scale. The same applies the the Enhanced Fujita scale with EF4 and EF5 tornadoes.
Before the development of the Fujita scale in 1971 there was no rating system for tornadoes. All ratings of pre-1971 tornadoes are retrospective.
No. EF5 is a rating used for tornadoes, not hurricanes. Tornadoes in the United States and, as of 2013, Canada are rated on the Enhanced Fujita scale, with ratings from EF0 to EF5. EF5 is the highest and rarest intensity rating. Hurricanes are rated on a different scale, called the Saffir-Simpson scale, which ranges from category 1 to category 5, with 5 being the highest and rarest rating as well.
The Enhanced Fujita scale is a system of rating tornadoes based on the severity of the damage they cause. Ratings range from EF0 for the weakest tornadoes to EF5 for the strongest. It is an upgraded (i.e. enhanced) version of the Fujita scale, a similar rating system created by Tetsuya Fujita in 1971.
Tornadoes in the U.S. are rated on the Enhanced Fujita scale, which has six strength categories ranging from EF0 at the weakest to EF5 at the strongest. It was adapted from the similar Fujita scale, which is still used in a number of countries.
There are three rating systems for tornadoes, all of which are based on damage. The most widely known is the Fujita scale, which rates tornadoes from F0 at the weakest to F5 at the strongest. In the United States and Canada it has been replaced by the Enhanced Fujita scale which runs from EF0 to EF5. Ratings are essentially equivalent. Some European countries use the TORRO scale, which runs from T0 to T11, with every two ratings equivalent to one rating on the Fujita scale.
All tornadoes are considered a violent weather events in general terms. However, less than 1% of tornadoes attain a violent rating of EF4 or EF5 on the Enhanced Fujita scale.