Yes. Funnel clouds ar usually visible unless they are obscured by rain.
They are often visible as funnel clouds, but these clouds are not necessarily very large.
The visible funnel usually extends from the clouds to the ground but the vortex can extend several miles up into the storm.
Those funnel clouds are very ominous.
Tornadoes typically form within cumulonimbus clouds, which are large and vertically developed clouds associated with thunderstorms. These clouds can have a distinct anvil shape and may exhibit features such as a rotating updraft known as a mesocyclone. However, tornadoes themselves are not visible until they make contact with the ground, at which point they can pick up debris and dust, creating a visible funnel cloud.
Tornadoes are associated with funnel clouds.
gt
Yes. Many funnel clouds never touch down.
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.
A synonym for funnel cloud is condensation funnel. Tornado may also be considered a synonym, though this is a bit loose as not all funnel clouds become tornadoes, and some tornadoes do not have a visible funnel.
To be classified as a tornado, a funnel cloud must reach the ground. Funnel clouds that do not reach the ground are typically referred to as non-tornadic funnel clouds.
British
Funnel clouds most often occur in the spring and early summer and in the later afternoon and early evening.