Tornadoes start on land, or on the coast near land - unlike hurricanes that start over the sea.
The wind speed in a tornado can be up to twice as strong as against a hurricane.
The central United States is hit by devastating tornadoes between March and June, and in the fall each year.
But why do they occur right there?
And what really puts an end to a tornado?
Hear SVT's meteorologist Jannicke Geitskaret answer in the clip above.
Javascript is disabled
Javascript must be turned on to play video
Read more about browser support
The browser is not supported
SVT does not support playback in your browser.
We therefore recommend that you switch to a different browser.
Read more about browser support
Residents of the city of Andover captured tornadoes on film.
Photo: EBU