The longest-lived and farthest traveling tornado was the world in the US, but not in the world. It was the Tri-State tornado of March 18, 1925, which hit portions of Missouri, Illinois, and Indiana. The worst tornado on record in the world was the Daulatpur-Saturia tornado, which struck central Bangladesh on April 26, 1989.
The longest tornado in the world happened in the U.S. in 1925.
The worst tornado was the Daulatpur-Salturia tornado in Bangladesh, it killed more than 1300 people but its intensity is unknown.
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 longest lived tornado on record lasted 3 hours and 29 minutes. This tornado, known as the Tri-State tornado holds several other records as well.
In a violent tornado the worst features are flying debris and suction vortices, small whirlwinds that have stronger winds than the rest of the tornado.
The worst level of tornado that can strike is an EF5.
The longest a tornado is believed to have listed is about three and a half hours. That same tornado also hold the record for distance traveled: 219 miles.
The longest-lasting tornado on record was the Tri-State tornado of March 18, 1925. It lasted for 3 hours and 29 minutes.
Probably the worst, or at least the deadliest tornado in the world was the Daulatpur-Salturia in Bangladesh on April 26, 1989.
That is difficult to determine. Many of the longest official tornado tracks were actually tornado families, series of tornadoes forming in succession, rather than individual tornadoes.
The worst tornado to hit Cowley County Kansas was the Udall, Kansas F5 tornado of May 25, 1955. This tornado killed 80 people, making it the deadliest tornado in Kansas history.
The worst tornado was the Daulatpur-Salturia tornado in Bangladesh, it killed more than 1300 people but its intensity is unknown.