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.
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Its a tornado that can reach 659 miles per hour and can rip a building of of the ground and destroy it from 6 miles away and the widest it ever got was 69 yards long and 83 yards high
A satellite tornado is a tornado that touches down near and usually orbits a larger tornado within the same mesocyclone.
A cone-shaped tornado is simple a tornado whose funnel is cone-shaped. Tornado funnels may also appear rope-like, column-like, or appear wispy. The shape and size of a tornado do not necessarily indicate how strong the tornado is.
If you can see the tornado
The "eye" of a tornado is at the center of the funnel.
A tornado descends from the base of a thunderstorm.