A tornado usually forms from a large column of rotating air called a mesocyclone. A tornado therefore has quite a bit of angular momentum, so air spirals into the it.
A tornado does not have a spiral shape or appearance (except in some cases where helical subvortices form), but the winds in and near a tornado move in a spiral fashion.
It is also called a tornado!
Winds in a tornado spiral inward and upward.
Tornadoes generally don't have a spiral shape. But the winds in and near a tornado always move in a spiral pattern.
Tornado.
Tornado Sirens going off
tornado
i think the middle of the tornado is completely still.
Like a hurricane, the middle of the tornado is called the Eye.
Air at ground level will then spiral into the tornado and reach great speeds. Any buildings or trees the tornado hits will be damaged or destroyed by the winds.
A whirlwind. Whirlwinds can range from harmless dust devils to violent tornadoes.
they are pipes in form of a spiral shape :D