Yes. For one thing, a tornado may be on the ground even if it does not appear to be. Even if it is not on the ground (at which point it's just a funnel cloud) it can touch down very quickly
Tornadoes and their winds are very dangerous. Even a fairly weak tornado could lift a person off the ground or send a piece of debris flying at them.
It is simply a tornado and even a tornado that is considered "weak" by tornado standards can produce a cloud of dust at ground level.
Yes. A tornado is very powerful and dangerous, a tornado is very similar to a twister. It consists of winds traveling up to 300 miles per hour, some tornado's winds even travel faster.
Yes and no. The funnel of a tornado does not have to reach the ground for damaging winds to occur at ground level. However, if those winds reach the ground then the tornado has touched down even if the funnel hasn't.
Any tornado can be dangerous. An F5 tornado is extremely dangerous. Hit by the full force of an F5 tornado, even the strongest houses will be swept away. Many F5 tornadoes are quite large, capable of leveling whole neighborhoods and killing dozens in a matter of minutes.
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.
If you cannot get to any safe shelter or even a ditch during a tornado, lie flat on the ground.
tornado clouds
Tornadoes start as a funnel cloud, becoming a tornado when they reach the ground.
Flying debris is the most dangerous part in a tornado.
A tornado is considered a tornado when it reaches the ground
Not always. The funnel is only the portion of the tornado that is visible. The winds of a tornado at ground level may still be capable of causing significant damage even if the visible funnel does not reach ground level. When this occurs it is usually evidenced by swirling dust or debris beneath the funnel. That is usually enough to report a tornado. Oftentimes, though, the funnel does touch the ground in which case there is definitely a tornado. Also of note is that sometimes you have a funnel that does not produce damaging winds on the ground. These are not counted in tornado statistics.