How Typhoon Develops?

A typhoon is made up of clouds called cumulonimbus clouds. A cumulonimbus is a kind of cloud, which develops lots of rain. When these clouds converges, and with the Earth's rotation, they create small vortex. The center of this vortex has low air pressure which we called it the eye of typhoon. This vortex grows bigger as it rises to north, finally becoming typhoon.