Naming the cyclones tad 2013-07

1. WELCOME

2. TITLE NAMING THE CYCLONES M.SRIKALA ID NO: TAD/2013-07

3. CONTENTS Introduction Need or Purpose Historical Background Procedure Retirement Criteria

4. What are Cyclones?   "Cyclone" is an intense whirl in the atmosphere with very strong winds circulating around it in anti-clockwise direction in the Northern Hemisphere and in clockwise direction in the Southern Hemisphere. Word "Cyclone" is derived from the Greek, word " Cyclos " meaning the coils of a snake.

5. TROPICAL CYCLONE TRACKS FOR THE WORLD Tropical cyclones form over tropical waters at least 80°F but not near the the equator. They move around the large subtropical high pressure areas and can leave the tropics.

6. NAME - PLACES Hurricane - Atlantic and Eastern Pacific Typhoon - Western Pacific Willy-Willies - Australian sea Baguis - Philippines

7. Tropical cyclones are named to provide ease of communication between forecasters and the general public regarding forecasts, watches, and warnings. Sometimes storms can often last a week or longer Names can reduce the confusion about what storm is being described, as more than one can occur in the same region at the same time. NEED or PURPOSE

8.  It would help identify each individual tropical cyclone.  It helps the public to become fully aware of its development.  It does not confuse the public when there is more than one tropical cyclone in the same area.  Warnings reach a much wider audience very rapidly . Importance for naming tropical cyclones:

9. Initially, people living in the Caribbean Islands would name the storms after the saint of the day from the Roman Catholic liturgical calendar for the day on which the hurricane/cyclone occurred. The credit for the first usage of personal names for weather systems, is generally given to the Queensland Government Meteorologist Clement Wragge , who named systems between 1887-1907 . Wragge used names drawn from the letters of the Greek alphabet, Greek and Roman mythology and female names, to describe weather systems over Australia , New Zealand and the Antarctic . HISTORICAL BACKGROUND

10.   In 1953, the US weather service officially adopted the idea and created a new phonetic alphabet (international) of women's names from A to W, leaving out Q, U, X, Y and Z . Subsequent protests by women's liberation bodies in the 60s and 70s helped change the naming procedure for the storms to include male names in 1978. r The year's first tropical storm was given the name beginning with the letter "A", the second with the letter "B" and so on through the alphabet. In even-numbered years, odd-numbered storms got men's names and in odd-numbered years, odd numbered storms got women's names. w

11. There is a strict procedure to determine a list of tropical cyclone names in an ocean basin(s) by the Tropical Cyclone Regional Body responsible for that basin(s) at its annual/biennial meeting. There are five tropical cyclones regional bodies, ESCAP/WMO Typhoon Committee, WMO/ESCAP Panel on Tropical Cyclones, RA I Tropical Cyclone Committee, RA IV Hurricane Committee, and RA V Tropical Cyclone Committee. Procedure for Naming of Tropical Cyclone

12. Figure: 2 Areas of responsibility of different RSMCs

13. These RSMCs monitors and predicts the tropical cyclones over their respective regions. They are also responsible to name the cyclones. For North Atlantic Ocean six lists are used in rotation. Thus, the 2008 list will be used again in 2014. For the Eastern north Pacific Ocean the lists are also re-cycled every six years (the 2008 list will be used again in 2014). For Central north Pacific Ocean the names are used one after the other. When the bottom of one list is reached, the next name s the top of the next list. s

14. INDIAN OCEAN TROPICAL CYCLONE NAMES For the Indian Ocean region, deliberations for naming cyclones began in 2000 and a formula was agreed upon in 2004. Eight countries in the region - Bangladesh, India, Maldives, Myanmar, Oman, Pakistan, Sri Lanka and Thailand - all contributed a set of names which are assigned sequentially whenever a cyclonic storm develops For the north Indian Ocean basin, the WMO/ESCAP Panel on Tropical Cyclones (PTC) for the Bay of Bengal and Arabian Sea is the responsible regional body.

15. The eight north Indian Ocean countries have prepared a list of 64 names for the cyclones. This is a one-time use list of names. When the last name of List 8 has been assigned, a new list will be drawn up by the ESCAP/WMO panel. Procedure: 1) The Panel member’s name are listed alphabetically country wise. 2) The name will be used sequentially column wise. 3) The first name will start from the first row of column one and continue sequentially to the last row in column eight. 4) The names which have been already used from the list are highlighted

16. North Indian Ocean Contributor List 1 List 2 List 3 List 4 Bangladesh Onil Ogni Nisha Giri India Agni Akash Bijli Jal Maldives Hibaru Gonu Aila Kella Mayanmar Pyarr Yemyin Phyan Thane Oman Baaz Sidr Ward Murjan Pakistan Fanoos Nargis Laila Nilam Sri Lanka Mala Abe Bandu Mahasen Thailand Mukda Khai Muk Phet Phailin The list of tropical cyclone names for the north Indian Ocean is given below.

17. Contributor List 5 List 6 List 7 List 8 Bangladesh Helen Chapala Ockhi Fani India Lehar Megh Sagar Vayu Maldives Madi Vaali Baazu Hikaa Mayanmar Nanauk Kyant Daye Kyarr Oman Hudhud Nada Luban Maha Pakistan Nilofar Vardah Titli Bulbul Sri Lanka Priya Sama Das Soba Thailand Komen Mora Phethai Amphan

18. The RSMC tropical cyclones New Delhi gives a tropical cyclone an identification name from the above name list. Tropical cyclones in the Bay of Bengal The Bay of Bengal , located north of the Indian Ocean , is responsible for the formation of some of the strongest and deadliest tropical cyclones in the world. The basin is abbreviated BOB by the India Meteorological Department (IMD), the official Regional Specialized Meteorological Center of the basin. The Bay of Bengal's coast is shared among India , Bangladesh , Myanmar , Sri Lanka and western part of Thailand .

19. The name should be short and readily understood when broadcast. Further the names must not be culturally sensitive and not convey some unintended and potentially inflammatory meaning . The suggested name pertaining to India may be communicated to Director General of Meteorology, India Meteorological Department, Mausam Bhawan , Lodi Road, New Delhi-110003 for consideration CRITERIA

20. Names of some storms that cause widespread damage and deaths are usually retired and are not brought back or reused later, at least for 10 years. These names are then replaced with new names. The names are retired as a mark of respect to the dead. Once a name is officially retired, it is then replaced with a name of the same gender and beginning with the same letter. So far, since 1972, there have been 50 names that have been retired. And, since the names in the beginning of the alphabet get used more than those at the end, it's more likely that those will be retired names first. Retirement