The worst tornado in U.S. history, the Tri-State tornado of 1925, was on the ground for 3 hours and 29 minutes. The worst in world history, the Daulatput-Saturia tornado of 1989, had a path length of 50 miles but it is not known how long it was on the ground. However, given the path length it was probably on the ground for an hour to two hours.
The Tuscaloosa-Birmingham tornado of 2011 was on the ground for about 90 minutes.
It depends on the size of the tornado and how fast it's moving. Most tornadoes will only be over a given spot for a few seconds. A large tornado moving at normal speed may be over a spot for a minute or two. However, one tornado was noted to have stayed on the same spot for 90 minutes.
On the traditional Fujita scale there is no such thing as an F9 tornado. On the TORRO scale used in Britain a T9 tornado is a very violent tornado equivalent to a strong F4 on the Fujita scale. Such a tornado will destroy most buildings in its path.
The average tornado lasts about 10 minutes. However duration may range from just a few seconds to over an hour. The longest lived tornado recorded was on the ground for 3.5 hours.
A typical tornado lasts one to five minutes. The longest-lived tornado on record lasted for three and a half hours.
The tornado is reported to have had a path length of 27 miles and an average forward speed of 35 mph, which works out to a duration of 46 minutes.
The Tuscaloosa-Birmingham tornado of 2011 was on the ground for about 90 minutes.
several hours
The worst tornado in U.S. history was on March 18, 1925. Called the Tri-State tornado, it tore a 219 mile long path across Missouri, Illinois, and Indiana, killing 695 people.
several minutes or hours
It was on the ground for about 30 minutes.
The worst tornado to strike the United States was the Tri-State tornado of March 18, 1925. This F5 tornado tore a 219-mile-long path of destruction across parts of Missouri, Illinois, and Indiana, ravaging many towns and killing an estimated 695 people.
The worst tornado damage of 2010 appears to have been in Mississippi, particularly from long-track EF4 tornado that move across the state on April 22.
The Hallam tornado was on the ground for 1 hour and 35 minutes.
The distance a tornado travels varies considerably. A typical tornado travels only a mile or two. Some tornadoes will only bee on the ground for a few hundred feet. The worst tornadoes usually travel ten miles or more, with some paths being well over 100 miles long. The longest tornado track on record was 219 miles.
The duration of a tornado can vary greatly, from just a few seconds to several hours. The length of time a tornado stays on the ground depends on various factors such as the speed at which it is moving, the strength of the tornado, and the terrain it encounters.
The worst tornado in U.S. history was the Tri-State tornado of March 18, 1925. The tornado first formed north of Ellington, Missouri. The tornado devastated numerous towns in Missouri, Illinois, and Indiana along a path 219 miles long.