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New Delhi : Worldwide there are six regional specialised meteorological centres (RSMCs) and five regional Tropical Cyclone Warning Centres (TCWCs) mandated for issuing advisories and naming of tropical cyclones.
India Meteorological Department (IMD) is one of the six RSMCs to provide tropical cyclone and storm surge advisories to 13 member countries under WMO/ESCAP Panel including Bangladesh, India, Iran, Maldives, Myanmar, Oman, Pakistan, Qatar, Saudi Arabia, Sri Lanka, Thailand, United Arab Emirates, and Yemen. RSMC, New Delhi, is also mandated to name the Tropical Cyclones developing over the north Indian Ocean (NIO) including the Bay of Bengal (BoB) and the Arabian Sea (AS).
Naming of Tropical Cyclones (TCs) helps scientific community, disaster managers, media, and general masses to
- identify each individual cyclone.
- create awareness of its development.
- remove confusion in case of simultaneous occurrence of TCs over a region
- remember a TC easily
- rapidly and effectively disseminate warnings to much wider audience
Therefore, the tropical cyclones forming over different Ocean basins are named by the RSMCs & TCWCs concerned. For north Indian Ocean including Bay of Bengal and Arabian Sea, the RSMC, New Delhi, assigns the name to tropical cyclones following a standard procedure.
The WMO/ESCAP Panel on Tropical Cyclones (PTC) at its twenty-seventh Session held in 2000 in Muscat, Sultanate of Oman, agreed in principle to assign names to the tropical cyclones in the Bay of Bengal and Arabian Sea. After long deliberations among the member countries, the naming of the tropical cyclones over the north Indian Ocean commenced from September 2004. This list contained names proposed by then eight member countries of WMO/ESCAP PTC, viz., Bangladesh, India, Maldives, Myanmar, Oman, Pakistan, Sri Lanka and Thailand. Almost all names except the last name (Amphan) from this list have been utilised till date.
During WMO/ESCAP PTC 45th Session held at Muscat, Oman, in September, 2018, it was decided to prepare a fresh list of names of tropical cyclones including representation from five new member countries, viz., Iran, Qatar, Saudi Arabia, United Arab Emirates, and Yemen (Total 13 member countries), according to a PIB release.
The WMO/ESCAP PTC in this session nominated Dr Mrutyunjay Mohapatra, India Meteorological Department, to act as Rapporteur to co-ordinate among the Panel member countries and to finalise the list of names following the standard procedure and suggest the implementation plan. The report of the rapporteur was initially presented by India during 46th Session of WMO/ESCAP PTC held in Nay Pyi Taw, Myanmar, during September 9-13, 2019. After deliberations, the report was finally adopted by WMO/ESCAP PTC with consensus in April, 2020.
Following criteria were adopted for selection of names by the PTC member countries: The proposed name should be neutral to (a) politics and political figures (b) religious believes (c) cultures and (d) gender; Name should be chosen in such a way that it does not hurt the sentiments of any group of population over the globe; It should not be very rude and cruel in nature; It should be short, easy to pronounce and should not be offensive to any member; The maximum length of the name will be eight letters; The proposed name should be provided along with its pronunciation and voice over; The names of tropical cyclones over the north Indian Ocean will not be repeated. Once used, it will cease to be used again. Thus, the name should be new.
The current list has a total of 169 names including 13 names each from 13 WMO/ESCAP member countries.