A tornado is a violent windstorm circling around the centre of a low pressure area. It is a rotating column of air extending from a thunderstorm to the ground.
Tornado consists of very powerful winds, and a violent tornado can travel with the speed of 300 km/h. The diameter of the tornado can range from as small as a metre to as large as several kilometres or more wider. Therefore, tornado is capable of causing tremendous loss of life and property, destroying buildings and other structures, damaging the power poles and communication systems, hurling vehicles hundreds of yards away and uprooting the trees.