The funnel of a tornado always connects to cloud base and typically all the way to the ground (the circulation of a tornado can reach the ground even if the funnel does not). Cloud base height is variable but in a tornado supercell is usually about 3000 feet to a mile above the ground. The circulation of the tornado usually goes a great distance above cloud base and can reach heights of more than 4 miles.
A wedge tornado is a tornado that appears wider than it is tall.
Tornadoes are around 500 feet (150 m) across on average and stay on the ground for 5 miles (8 km).
If you mean in diameter, then yes. If you mean in height, then no, A typical tornado is several kilometers tall.
No. A tornado and a twister are the same thing.
Yes. A river, forked or not, will not affect a tornado.
A tornado.
Not sure what you mean by a funnel tornado. If you are referring to the Seymour, Texas tornado of April 10, 1979, it had a well-defined funnel and it was funnel-shaped. However, it did touch down so it was not merely a funnel cloud.
tornado clouds
A tornado that does not touch the ground is a funnel cloud.
Not technically. It is the beginning of a tornado, but they are categorized differently. It is not considered a tornado until it reaches the ground with damaging winds.
A funnel cloud that touches the ground is commonly known as a tornado.
A funnel cloud is a developing tornado that has not reached the ground.
A funnel cloud is like a tornado only it does not reach the ground.
Yes. A classic tornado is a relatively narrow funnel shape extending toward the ground. A wedge tornado is enormous, appearing to be wider than it is tall.
The "eye" of a tornado is at the center of the funnel.
A tornado starts out as a funnel cloud.
To some extent, yes. A funnel cloud is the visible portion of a tornado. However, not all funnel clouds are tornadoes. If the winds associated with a funnel cloud do not reach the ground then it is not a tornado. Conversely, if the winds do reach the ground the term funnel cloud is not usually used, and the event is simply called a tornado.