A funnel cloud is a condensation funnel made of water vapor, dust, dirt, and debris lifted upward from the ground in areas experiencing extremely low air pressure. It is the visible part of a tornado and is considered a tornado if it touches the ground.
When it touches the ground.
it becomes a tornado
It forms a funnel cloud.
a funnel cloud touching the ground is then called a tornado
A tornado that doesn't touch the ground isn't a tornado; it is a funnel cloud. However if the funnel is pulling debris off the ground or making some other type of contact with the ground it is a tornado.
When a funnel cloud touches the ground it becomes a tornado.
A funnel cloud that touches the ground is a tornado.
tornado clouds
tornado
A funnel shaped cloud is called a funnel cloud. If it touches the ground it is called a tornado.
All funnel clouds touch the clouds. A funnel cloud that touched the ground is called a tornado.
When it touches the ground.
A tornado.
it becomes a tornado
the tornado kind
Neither. A funnel cloud that touches the ground is a tornado. A thunderhead is the sort of cloud that develops into a thunderstorm, and a supercell is the kind of thunderstorm most likely to produce a tornado.
Most likely it is a funnel cloud. If it touches the ground then it is a tornado.