How do tropical cyclones occur?

When we talk about cyclones, we do not usually mean the small destructive tornadoes, but instead the large tropical storms, which the coastal inhabitants face. In America, these are known as ‘hurricanes’, in East Asia ‘typhoons’, and in India ‘cyclones’. Hurricanes occur in early spring in the warm waters around Africa. During this season, copious amounts of water evaporate rise upwards, and forms clouds. This sharply reduces the pressure directly above the sea, allowing more moist air to flow in from the surrounding areas. Due to the rotation of the Earth, bundles of cloud start rotating and an air vortex is created. This vortex moves fast over the sea and wrecks widespread havoc on reaching the land.