Tornadoes are sometimes called twisters.
The stretch of land hit by a tornado is referred to as its damage path. If you are referring to a particular region where all the world's tornadoes occur, there is none as tornadoes can happen almost anywhere. However the place that get s more tornadoes than anywhere else is called Tornado Alley.
Tornadoes are often called twisters. Some people call them cyclones, though this is not a correct name as it already applies to something else.
The continental United States can and does have tornadoes. It has more tornadoes than anywhere else.
Tornadoes in the United States are simply called tornadoes. In informal contexts they are sometimes called twisters.
Yes, South Dakota is part of a region called Tornado alley, which gets more tornadoes than anywhere else in the world. Even outside Tornado Alley tornadoes have been recorded in all 50 states.
Tornadoes in the U.S. are called tornadoes.
Tornadoes are sometimes called twisters, but tornado is the preferred scientific term.
While they happen everywhere else, tornadoes are not known to form in Antarctica.
Tornadoes happen in Miami for the same reason they happen anywhere else. See the related question for how tornadoes form in general.
Tornadoes are formally called tornadoes.
Smaller tornadoes near a larger tornadoes are often called satellite tornadoes. Smaller vortices within a tornado are called subvorticies or suction vorticies.
Tornadoes are often called twisters.