Many thunderstorms occur in nature and a thunderstorm which causes the most damage is the tornado, see here now. And it’s been a miracle for many how tornadoes form. There are some causes for the formation of those tornadoes, or any kind of thunderstorm. It’s noted that whenever there’s a collision of a massive volume of air. It so happens that warm air and cold air may be present together. That the warm atmosphere is under and the cod air above. This warm air will try to grow up and a low pressure region may develop and this may cause the formation of the tornado when the updraft of air is large. The tornadoes occur only in certain areas and not in all areas because they occur only when a certain climatic condition is attained.
A sudden shift in the direction of wind has been observed before the formation of a tornado. When it’s being developed the speed of wind increases and this high speed wind begins rising upwards. This might cause a horizontal spinning effect in the lower atmosphere area. Later this change in direction and the effect is seen to be formed in the vertical direction. Now at this stage as the thunderstorm that’s being shaped starts its upward vertical travel the circumference grows and it may become very large and range anything between two to six miles.
A rotating wall cloud or a lower cloud base is said to be formed in the region of wind direction.
The tornadoes can be classified into three classes depending on the factors of their formation such as weak, strong and violent tornadoes. A detailed study also shows that the majority of the tornadoes are weak and almost half of them are powerful and only a small number of them are violent in nature.
It has come to the notice after a long observation that rain does not occur in the area of the tornadoes however there might be heavy to moderate rainfall in the background. Thus this is a concise account of how tornadoes appear to form.