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Tropical cyclone naming
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==History== {{main|History of tropical cyclone naming|List of historic tropical cyclone names}} {| class="wikitable" style="margin: 1em auto;" |- ! colspan=4 style="background: #ccf;" | Tropical cyclone naming institutions |- ! Basin !! Institution !! Area of responsibility !! |- | colspan=4 style="text-align:center;" |'''Northern Hemisphere''' |- | [[Atlantic hurricane|North Atlantic]]<br />[[Pacific hurricane|Eastern Pacific]]|| United States [[National Hurricane Center]] || Equator northward, European and African Atlantic Coasts – 140°W ||{{RA IV Hurricane Operational Plan}} |- | [[Pacific hurricane|Central Pacific]] || United States [[Central Pacific Hurricane Center]] || Equator northward, 140°W – 180° ||<ref name="RA IV HOP"/> |- | [[Pacific typhoon|Western Pacific]] || [[Japan Meteorological Agency]]<br />[[PAGASA]] (unofficial) || Equator – 60°N, 180 – 100°E<br />5°N – 21°N, 115°E – 135°E ||{{Typhoon committee operational plan}}<br /><ref name="GMA"/> |- | [[North Indian Ocean tropical cyclone|North Indian Ocean]] || [[India Meteorological Department]] || Equator northward, 100°E – 40°E ||{{North Indian Ocean tropical cyclone operational plan}} |- | colspan=4 style="text-align:center;" |'''Southern Hemisphere''' |- | [[South-West Indian Ocean tropical cyclone|South-West<br />Indian Ocean]] || Mauritius Meteorological Services<br />Météo Madagascar<br />[[Météo-France]] Reunion || Equator – 40°S, 55°E – 90°E<br />Equator – 40°S, African Coast – 55°E<br />Equator – 40°S, African Coast – 90°E ||{{RA I Tropical cyclone operational plan}} |- | [[Australian region tropical cyclone|Australian region]] || [[Indonesian Agency for Meteorology, Climatology and Geophysics]]<br />Papua New Guinea National Weather Service<br />Australian [[Bureau of Meteorology]] || Equator – 10°S, 90°E – 141°E<br />Equator – 10°S, 141°E – 160°E<br />10°S – 40°S, 90°E – 160°E ||{{RA V Tropical cyclone operational plan}} |- | [[South Pacific tropical cyclone|Southern Pacific]] || [[Fiji Meteorological Service]]<br />[[Meteorological Service of New Zealand]] || Equator – 25°S, 160°E – 120°W<br />25°S – 40°S, 160°E – 120°W ||<ref name="SPAC TCOP"/> |- | [[South Atlantic tropical cyclone|South Atlantic]] || [[Brazilian Navy Hydrographic Center]] (unofficial) || Equator – 35°S, Brazilian Coast – 20°W ||<ref name="brazil">{{cite web |title=NORMAS DA AUTORIDADE MARÍTIMA PARA AS ATIVIDADES DE METEOROLOGIA MARÍTIMA NORMAM-19 1a REVISÃO |url=https://www.marinha.mil.br/dhn/sites/www.marinha.mil.br.dhn/files/normam/NORMAN-19-REV-1--Ed2018-CHM.pdf |publisher=Brazilian Navy |access-date=November 6, 2018 |archive-url=https://web.archive.org/web/20181106155111/https://www.marinha.mil.br/dhn/sites/www.marinha.mil.br.dhn/files/normam/NORMAN-19-REV-1--Ed2018-CHM.pdf |archive-date=November 6, 2018 |page=C-1-1 |language=pt |date=2018}}</ref> |} Before the formal start of naming, tropical cyclones were often named after places, objects, or saints' feast days on which they 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 and 1907. This system of naming weather systems subsequently fell into disuse for several years after Wragge retired until it was revived in the latter part of [[World War II]] for the Western Pacific. Formal naming schemes have subsequently been introduced for the North Atlantic, Eastern, Central, Western and Southern Pacific basins as well as the Australian region and Indian Ocean.<ref name="Mahina">{{Cite FTP |title=They Called the Wind Mahina: The History of Naming Cyclones|url=ftp://ftp.aoml.noaa.gov/hrd/pub/dorst/Mahina.pptx|author=Dorst, Neal M|at=Slides 8–72|date=October 23, 2012|server=Hurricane Research Division, Atlantic Oceanographic and Meteorological Laboratory|format=PPTX}}</ref> {{as of|2014}}, tropical cyclones are officially named by one of eleven warning centers and retain their names throughout their lifetimes to facilitate the effective communication of forecasts and storm-related hazards to the general public.<ref name="TCFAQB1">{{cite book|author=Landsea, Christopher W|author2=Dorst, Neal M|date=June 1, 2014|title=Tropical Cyclone Frequently Asked Question|chapter=Subject: Tropical Cyclone Names: B1) How are tropical cyclones named?|publisher=United States National Oceanic and Atmospheric Administration's Hurricane Research Division|chapter-url=http://www.aoml.noaa.gov/hrd/tcfaq/B1.html|archive-url=https://web.archive.org/web/20181210075835/http://www.aoml.noaa.gov/hrd/tcfaq/B1.html|archive-date=December 10, 2018|url-status=live}}</ref> This is especially important when multiple storms are occurring simultaneously in the same ocean basin.<ref name="TCFAQB1"/> Names are generally assigned in order from predetermined lists, once they produce one, three, or ten-minute sustained wind speeds of more than {{convert|65|km/h|mph|round=5|abbr=on}}.<ref name="RA IV HOP"/><ref name="NIO TCOP"/><ref name="SWIO TCOP"/> However, standards vary from basin to basin, with some systems named in the Western Pacific when they develop into tropical depressions or enter PAGASA's area of responsibility.<ref name="GMA"/> Within the [[Southern Hemisphere]], systems must be characterized by a significant amount of [[gale]]-force winds occurring around the center before they are named.<ref name="SWIO TCOP"/><ref name="SPAC TCOP"/> {{anchor|Retirement}}Any member of the [[World Meteorological Organization]]'s hurricane, typhoon and tropical cyclone committees can request that the name of a tropical cyclone be retired or withdrawn from the various tropical cyclone naming lists.<ref name="RA IV HOP"/><ref name="WPAC TCOP"/><ref name="SPAC TCOP"/> A name is retired or withdrawn if a consensus or majority of members agree that the system has acquired a special notoriety, such as causing a large number of deaths and amounts of damage, impact, or for other special reasons.<ref name="RA IV HOP"/> A replacement name is then submitted to the committee concerned and voted upon, but these names can be rejected and replaced with another name for various reasons: these reasons include the spelling and pronunciation of the name, the similarity to the name of a recent tropical cyclone or on another list of names, and the length of the name for modern communication channels such as social media.<ref name="RA IV HOP"/><ref name="WPAC TCOP"/><ref name="Aus names">{{cite web |title=Naming tropical cyclones|url=http://www.bom.gov.au/cyclone/tropical-cyclone-knowledge-centre/understanding/tc-names/ |publisher=Australian Bureau of Meteorology |access-date=February 27, 2025<!-- |archive-url=https://web.archive.org/web/20150222124156/http://www.bom.gov.au/cyclone/about/names.shtml |archive-date=February 22, 2015 |url-status=live --> }}</ref> PAGASA also retires the names of significant tropical cyclones when they have caused at least {{ntsp|1000000000||[[Philippine peso|₱]]}} ({{ntsp|{{To USD|1000000000|PHL}}||US$}}) in damage or have caused at least 300 deaths.<ref name="PAGASA 2014">{{Cite press release |title=PAGASA replaces names of 2014 destructive typhoons |access-date=March 30, 2015 |publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration |url=http://pagasa.dost.gov.ph/index.php/news/92-press-release/682-pagasa-replaces-names-of-2014-destructive-typhoons |date=February 5, 2015 |archive-url=https://web.archive.org/web/20150210102848/http://pagasa.dost.gov.ph/index.php/add-news/2252-pagasa-replaces-names-of-2014-destructive-typhoons |archive-date=February 10, 2015 |url-status=dead }}</ref>
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