Ausually develops in a severe thunderstorm in areas with flat plains.

A tornado usually develops in a severe thunderstorm in areas with flat plains.

Explanation:

Tornado is the term used to describe atmospheric eddies. As you can see if you search for images of tornadoes, they appear in the shape of a funnel, constantly rotating around a center. This center is a low pressure area and usually does not cause much destruction wherever it is established. Tornadoes are produced by a convective storm, so we can say that a tornado usually develops in a severe storm in areas with flat plains.