HOW DOES A TORNADO OCCUR?
Tornadoes are formed when cool air descends and forms a cumulonimbus cloud. The warm air then rises and takes the place of the cool air. When the winds gather speed, they start to go up and down which then causes a circular motion. The cloud then gets sucked into the whirling winds which allows the tornado to become visible. When this resulting funnel cloud touches the ground, it is officially a tornado.