Seeing a tornado has been on my mind for a long time, and coincidentally Estonia is a privileged place for it. Located in one of the tornado alleys that exist, it is visited very often by this phenomenon.  But although my curiosity is great, my knowledge is small.
So in summer, whenever there is a chance of a storm, I go out to look at the clouds, and at the moment what I am finding are funnel clouds that are the beginning of what can become a tornado (Wikipedia link).

Last June 23 an impressive storm came, with a wonderful shelf cloud and when it reached the sea these small funnel clouds appeared.

Funnel clouds are often, but not always, the precursor to a tornado. They do not touch the ground, so everything remains a visual phenomenon. If they touch the ground then they are called tornadoes.

Everything happened in the following way. A great storm was seen coming from the front, headed by a shelf cloud. Seeing it pass over us was very nice, the light changed and under the clouds there were some bluish shadows. They were awesome. The storm was strong, it came fast and I barely had time to catch the camera when the winds threatened to blow everything around us. The rain came later, preventing us from seeing the cloud.

In this sequence, we can see how the funnel clouds change while the shelf cloud develops from below.