The structure of the Tropical Cyclones consist of the following
- Eye is at the center of the Tropical Cyclone/Hurricane weather circulation system and is a circular open area with clear skies, distinct lack of cloudiness and calm conditions and its diameter may vary from 30 to 65 kilometers. Eye is associated with prominent areas of sinking air with wind speeds about 25 kilometers per hour. However in some cyclones it may vary between 30 to 65 kilometers per hour. Usually Eye would develop when the maximum sustained winds are approximately at Tropical Cyclone/Hurricane force and is an indicator of the Tropical Cyclone/Hurricane.
Eye Wall is a very small area surrounding the Eye but it has the most prominent strong winds and the most intense rainfall.
Outer Periphery of spiral rain Bands of the Tropical Cyclone has significant wind and precipitation activity though the weather conditions are not as severe as in the Eye Wall region.
Size of the Tropical Cyclone/Hurricane vary from 16 to 1,900 kilometers in diameter. The average size of Indian Tropical Cyclone is around 500 kilometers in diameter.
There is also asymmetry of wind speed and rains in the Tropical Cyclone/Hurricane structure and also Gust winds of short duration in the sustained winds of the Tropical Cyclone which are extremely damaging. The whole Tropical Cyclone/Hurricane itself is moving say at a speed of say 25 kilometers per hour and this speed gets added on one side of the Tropical Cyclone, while it gets subtracted from the other side. also Gust winds of short duration in sustained winds of the Tropical Cyclone which are extremely damaging.