In this case it can be confirmed that the tornado has touched down. The funnel of a tornado does not have to touch down for the tornado to do so, and the vortex actually reaches the ground before the funnel does. The circulation reaching the ground is a more significant event. When the vortex is aloft its updraft can draw in air from directly below. This is no longer possible when the circulation reaches the ground. Since air can no longer be drawn in from below the pressure inside the vortex drops, causing the wind in it to intensify.
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tornado clouds
Before it forms into a tornado, the initial stage is a rotating column of air known as a mesocyclone within a supercell thunderstorm. As the storm intensifies and specific conditions align, the mesocyclone can descend and tighten into a tornado.
Yes, a tornado is typically formed within a thunderstorm. A tornado forms from a rotating updraft within a severe thunderstorm that creates a funnel cloud extending from the base of the storm to the ground.
The most notable example is a tornado, which is a funnel cloud that reaches the ground. Over water, this can manifest as a much less violent phenomenon called a waterspout (a non-cyclonic waterspout over land is called a landspout). Other smaller forms of rotating spinning air are called whirlwinds and dust devils.
A tornado typically appears as a rotating column of air that extends from the base of a thunderstorm to the ground. It can have a funnel-shaped cloud at the top and may be accompanied by strong winds and debris swirling around it. Tornadoes can vary in size and intensity.