The funnel cloud marks the location of a vortex where air spirals upward. This vortex formed from a larger vortex called mesocyclone, which was squeezed by a downdraft, causing it to tighten in diameter, intensify, and stretch vertically. This stretching causes it to extend downward.
A tornado has actually touched down on the ground - a funnel cloud is a spinning cloud that has not actually touched the ground.
funnel
a funnel cloud touching the ground is then called a tornado
A tornado that has touched the ground is called a funnel cloud.
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.
A tornado that does not touch the ground is a funnel cloud.
A tornado has actually touched down on the ground - a funnel cloud is a spinning cloud that has not actually touched the ground.
All funnel clouds touch the clouds. A funnel cloud that touched the ground is called a tornado.
It can take anywhere from just a few seconds, to several minutes, if the funnel cloud reaches the ground at all.
funnel
A funnel cloud that touches the ground is a tornado.
The funnel of a tornado itself is a called a funnel cloud, though this term is usually reserved for when it does not touch the ground. The funnel cloud often emerges from a low-hanging cloud called a wall cloud, which is attatched to the base of a cumulonimbus cloud.
a funnel cloud touching the ground is then called a tornado
When a funnel cloud touches the ground it becomes a tornado.
tornado clouds
A funnel shaped cloud is called a funnel cloud. If it touches the ground it is called a tornado.
A tornado that has touched the ground is called a funnel cloud.