* Cyclones like Jawad make regular journeys to Indian coast. Indian subcontinent is one of the most cyclone affected regions of the world. India has around 8041km long coast line, which encounters around 10 per cent of world’s tropical cyclones.
* Majority of cyclones hitting Indian coast originate in the Bay of Bengal and have their landfall the eastern coast. On an average, 5 to 6 tropical cyclones are formed in the region every year. Out of them 2 or 3 are destructive.
* The ratio of cyclone formation in the Bay of Bengal and the Arabian Sea is 4:1. In between 1891 and 1990, around 262 cyclones happened on the eastern coast of India while 33 cyclones occurred on the western coast.
* Cyclones with severe intensity mostly happen in October or November (1999 Super Cyclone, Phailin). Some super cyclones also occur in May (Fani).
* A fully mature cyclone has a calm center or eye around which there is a ring of hurricane winds. Many cyclones do not reach this stage.
* When developed, eye of a cyclone has 10 to 50km diameter. There is no rain in the eye region of the cyclone. Sometimes a double eye wall structure can also be witnessed when the storm becomes strong.
* Any cyclone causes most destruction during the landfall or the time when it hits the land mass. The destructive wind causes the damage. It is also accompanied by torrential rains causing floods.
* Size of cyclonic systems vary in diameter from 150km to 1000km. But their effects occur in thousands of square kilometers.
* A tropical cyclone like Jawad begins to weaken as it reaches land and its source of warm moist air begins to ebb. Weakening of a cyclone does not mean end of its danger to property and life. Effect of the cyclone continues as the low pressure moves above the land before getting dissipated.
