Cyclone Mocha likely to develop over Bay of Bengal today: IMD

Context: A cyclone, which is most likely to swerve away from the Indian coast, is all set to develop over the southeast Bay of Bengal by Wednesday, the India Meteorological Department (IMD) said Tuesday.

Key facts about Mocha Cyclone

  • Once intensified, it is to be identified as Cyclone Mocha (pronounced as Mokha), a name suggested by Yemen.
  • India has dual cyclone seasons – pre-monsoon (April-June) and post-monsoon (October-December). Of these, the most cyclone-prone months are May and November.
  • In the IMD’s possible cyclone track released Monday, the storm is expected to move north-northwestwards, that is, away from India’s east coast.

How the naming of tropical cyclones are done?

In general, tropical cyclones are named according to the rules at regional level. 

Northern Indian Ocean Names – Arabian Sea and the Bay of Bengal

The WMO/ESCAP Panel on Tropical Cyclones at its twenty-seventh Session held in 2000 in Muscat, Sultanate of Oman, agreed in principal to assign names to the tropical cyclones in the Bay of Bengal and Arabian Sea. The naming of the tropical cyclones over north Indian Ocean commenced from September 2004, with names provided by eight Members. Since then, five countries have joined the Panel.

  • The Panel Member’s names are listed alphabetically country wise.
  • The names will be used sequentially column wise.
  • The first name will start from the first row of column one and continue sequentially to the last row in the column thirteen.
  • The names of tropical cyclones over the north Indian Ocean will not be repeated, once used it will cease to be used again. The name should be new. It should not be there in the already existing list of any of the RSMCs worldwide including RSMC New Delhi.
  • The name of a tropical cyclone from south China Sea which crosses Thailand and emerge into the Bay of Bengal as a Tropical cyclone will not be changed. 

The RSMC New Delhi Tropical Cyclone Center is responsible to name the tropical cyclones that have formed over the Bay of Bengal and the Arabian Sea when they have reached the relevant intensity.

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