Tornadoes are rated based on the severity they cause, which is then used to estimate wind speed and assign a rating, ranging from EF0 for the weakest tornadoes to EF5 for the strongest. Tornadoes are listed in varies databases along with a number of figures such as rating, death toll, injuries, path length, path width, and cost of damage.
The largest tornado ever recorded was the El Reno, Oklahoma tornado of May 31, 2013. This tornado was 2.6 miles wide. Doppler radar measured a wind gust in the tornado at 296 mph, the second highest wind speed ever recorded in a tornado.
If a waterspout makes landfall and causes damage then it will likely be recorded as a tornado and given a rating on the Enhanced Fujita scale based on the severity of the damage it inflicts. If the waterspout stays on the water it usually will not be recorded as a tornado and so will not receive any rating. Occasionally, though, such a waterspout, having done no damage, will be recorded as an EF0 tornado.
The widest tornado ever record, the Hallam, Nebraska tornado, killed 1 person. The strongest tornado ever recorded (fastest winds measured), The Moore F5 of May 3, 1999, killed 36 people. The worst (deadliest) tornado ever recorded, the Daulatpur-Salturia in Bangladesh killed over 1,300 people.
On May 03, 1999, a series of tornadoes hit the suburbs of Oklahoma City. Now, this is not that unusual for Oklahoma except that one of the tornadoes resulted in a recorded wind speed of 318 MPH or 509 KM/H, the world's fastest tornado ever recorded.
Doppler radar measured winds at 301 mph +/- 20 in that tornado at a height about 100 feet above the ground. These are the fastest winds ever recorded on earth. However, it is possible that other tornadoes were stronger but did not get their winds measured
A tornado's width is measured at bottom, usually by the width of the damage path.
The fastest winds measured in a tornado were 302 mph in a tornado that struck the Oklahoma City area on May 3, 1999. However, other tornadoes may have had faster winds that were not measured, as it is rare to get an actual wind measurement from a tornado. The fastest known traveling speed of a tornado was 73 mph in the Tr-State tornado of March 18, 1925.
the tornado was recorded in kilbeggan Ireland in Europe on April 30th 1054
The first recorded tornado in the US was in Rehoboth, Massachusetts in August of 1671.
It is uncertain which tornado was the strongest, as most tornadoes do not have their winds measured. The highest recorded wind speed was in the Moore, Oklahoma tornado of May 3, 1999. Another possible candidate was the Xenia, Ohio tornado of April 3, 1974. See the links for pictures and video of those tornadoes.
Its is measured by speed,power,andwind speed
The widest tornado on record was measured to be 2.6 miles wide.