OCCUR during post-monsoon and less in pre-monsoon and monsoon season.Cyclones affect both the Bay of Bengal and the Arabian Sea.But the Bay of Bengal witnesses more cyclones than the Arabian Sea. This is because:The Bay of Bengal has a higher ocean surface TEMPERATURE than the Arabian Sea. This helps in the formation and intensification of cyclonic storms.The Bay receives higher rainfall and a constant inflow of freshwater. Therefore, its surface water keeps getting refreshed, making it IMPOSSIBLE for the warm water to mix with the cooler water below, making it ideal for depression.Cyclones are intense low-pressure areas, The amount of the pressure drop in the centre and the rate at which it increases outwards givesThe intensity of the cyclones and the strength of winds. So it is a characteristic of the cyclone that is has a low-pressure zone at the centre.Coriolis force is responsible to make wind flows in the counterclockwise direction in the Northern hemisphere and clockwise direction in the Southern hemisphere.If cyclone originates in the Andaman region then nearest port should be alarmed first, which is Kolkata Port.Rangoon port is far from Andaman and also on the eastern side while cyclone flows on the eastern side or towards the Indian plateau.Colombo port is on the western side of Sri LANKA, so it is less affected.List of 13 Major Ports of India: S.No. State Name of Port 1. Tamil Nadu Chennai 2. Tamil Nadu Tuticorin 3. Andhra Pradesh Vishakapatnam 4. Odisha Paradip 5. Maharashtra Jawaharlal Nehru 6. Maharashtra Mumbai 7. Karnataka Mangalore 8. Goa Marmagoa 9. Gujarat Kandla 10. West Bengal Kolkata Port 11. West Bengal Haldia 12. Tamil Nadu Ennore 13. . Kerala Kochi Port or Cochin Port