Cyclone Burevi

News: Cyclone Burevi is heading towards the Tamil Nadu(TN) coast after crossing Sri Lanka.

Facts:

  • Cyclonic Burevi: It is a tropical cyclone formed over southwest Bay of Bengal.It is expected to bring heavy rainfall over south Tamil Nadu and south Kerala.
  • Named by: The name “Burevi” was suggested by the Maldives.

Additional Facts:

  • Tropical Cyclones: These are storms that originate and intensify over warm tropical oceans.They are intense low pressure areas with very strong winds circulating around it in anti-clockwise direction in the Northern Hemisphere and in clockwise direction in the Southern Hemisphere.
  • Different Names: Tropical Cyclones are known by different names in different regions:
    • Cyclones in Indian Ocean
    • Hurricanes in Atlantic
    • Typhoons in Western Pacific in South China Sea
    • Willy-Willies in Western Australia
  • Conditions: The conditions favourable for the formation and intensification of tropical cyclones are:
    • Large sea surface with temperature higher than 27° C;
    • Presence of the Coriolis force enough to create a cyclonic vortex
    • Small variations in the vertical wind speed;
    • A pre-existing weak low-pressure area or low-level-cyclonic circulation is must for cyclone formation in tropics
    • Upper divergence above the sea level system

How Tropical cyclones are formed?

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