Nothing special.
All tornadoes stretch from cloud base to the ground. If the vortex doesn't reach cloud base or the ground it isn't a tornado.
Yes. Tornadoes are produced by thunderstorms, which from from cumulonimbus cloud. Usually a wall cloud and then a funnel cloud develop at the base of a cumulonimbus cloud before a tornado touches down.
No, it can not happen. You will always need a cloud to form a tornado. The kind of cloud that a tornado uses is a cumulonimbus cloud.
A tornado usually emerges from a wall cloud, which is at the base of a cumulonimbus cloud.
Cumulonimbus
Cumulonimbus clouds can spawn a tornado.
A tornado has a funnel and is at the bottom of a cumulonimbus cloud. If its winds do not reach the ground, though it is just a funnel cloud.
There is no such thing as a cumulonimbus tornado. A cumulonimbus cloud is a ver large towering cloud. Most thunderstorms are cumulonimbus clouds, and some of the strongest of these storms are what produce tornadoes.
It forms a funnel cloud.
Tornadoes are produces by cumulonimbus clouds. Often a wall cloud and/or funnel cloud are seen before or during a tornado.
None do. It is the other way around. Tornadoes form from cumulonimbus clouds.
tornado
When a funnel cloud touches the ground it becomes a tornado.