Misplaced Pages

Cyclone Hyacinthe: Difference between revisions

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.
Browse history interactively← Previous editContent deleted Content addedVisualWikitext
Revision as of 17:23, 25 January 2023 editFleurDeOdile (talk | contribs)Extended confirmed users2,972 edits per http://bibliotheque.meteo.fr/exl-php/docs/ILS_DOC/237222/doc00027059__PDF.txt← Previous edit Latest revision as of 11:33, 22 November 2024 edit undoPi bot (talk | contribs)Bots, IP block exemptions67,876 editsm Updating the Commons category from "Category:Hyacinthe cyclone" to "Category:Cyclone Hyacinthe" to avoid a category redirect 
(9 intermediate revisions by 7 users not shown)
Line 1: Line 1:
{{Short description|South-West Indian cyclone in 1980}} {{Short description|South-West Indian cyclone in 1980}}
{{good article}} {{good article}}
{{Infobox Hurricane {{Infobox weather event
| Name=Cyclone Hyacinthe | image = Hyacinthe 25 jan 1980 0326Z N6.jpg
⚫ | caption = Cyclone Hyacinthe on January 25
| Type=cyclone
⚫ | formed = {{start-date|January 15, 1980}}
⚫ | Year=1980
⚫ | dissipated = {{end-date|January 31, 1980}}
| Basin=SWI
| extratropical = January 29, 1980
| Image location=Hyacinthe 25 jan 1980 0326Z N6.jpg
}}{{Infobox weather event/MF
⚫ | Image name=Cyclone Hyacinthe on January 25
⚫ | winds = 90
⚫ | Formed= {{start-date|January 15, 1980}}
| Pressure = 960
⚫ | Dissipated= {{end-date|January 31, 1980}}
}}{{Infobox weather event/JTWC
|Extratropical=January 29
| 1-min winds=70 | winds = 70
}}{{Infobox weather event/Effects
⚫ | 10-min winds=90
| Pressure=960 | deaths = 25
⚫ | year = 1980
| Fatalities=25 direct
| damages = 167000000
| Damages=167
| Areas=], ], ] | affected = ], ], ]
}}{{Infobox weather event/Footer
| Hurricane season=] | season = ]
}} }}
'''Tropical Cyclone Hyacinthe''' was the ] on record worldwide. The eighth ] of the season, Hyacinthe formed on January 15, 1980, to the northeast of ] in the southern ]. Initially it moved to the west-southwest, and while slowly intensifying it passed north of the French ] of ]. On January 19, ] estimated that the storm had intensified to a ]. Hyacinthe looped to the south of eastern ] and weakened, although it restrengthened after turning to the east. The storm executed another loop to the southwest of Réunion, passing near the island for a second and later third time. Hyacinthe became ] on January 29 after turning southward, dissipating two days later. '''Cyclone Hyacinthe''' was the ] on record worldwide. The eighth ] of the season, Hyacinthe formed on January 15, 1980, to the northeast of ] in the southern ]. Initially it moved to the west-southwest, and while slowly intensifying it passed north of the French ] of ]. On January 19, ] estimated that the storm had intensified to a ]. Hyacinthe looped to the south of eastern ] and weakened, although it restrengthened after turning to the east. The storm executed another loop to the southwest of Réunion, passing near the island for a second and later third time. Hyacinthe became ] on January 29 after turning southward, dissipating two days later.


For twelve days, Hyacinthe dropped torrential rainfall on Réunion; nearly all of the island received more than 1 m (3.3 ft) of precipitation. Over a 15-day period from January 14 to January 28, {{convert|6083|mm|in|abbr=on}} of rainfall were recorded at ], a volcano ]. The heaviest rainfall occurred through a process called ] in the mountainous interior, leading to hundreds of landslides. Widespread floods damaged half the roads on Réunion and isolated three villages. Hyacinthe caused heavy damage to crops and damaged or destroyed 2,000 houses. Losses from the storm totaled $167 million (1980 ], 676 million ]),{{#tag:ref|All damage totals are reported in 1980 ]s with the original ] total in parenthesis.|group="nb"}} and 25 people were killed. For twelve days, Hyacinthe dropped torrential rainfall on Réunion; nearly all of the island received more than {{convert|1|m|ft|abbr=on}} of precipitation. Over a 15-day period from January 14 to January 28, {{convert|6083|mm|in|abbr=on}} of rainfall were recorded at ], a volcano ]. The heaviest rainfall occurred through a process called ] in the mountainous interior, leading to hundreds of landslides. Widespread floods damaged half the roads on Réunion and isolated three villages. Hyacinthe caused heavy damage to crops and damaged or destroyed 2,000 houses. Losses from the storm totaled $167 million (1980 ], 676 million ]),{{#tag:ref|All damage totals are reported in 1980 ]s with the original ] total in parentheses.|group="nb"}} and 25 people were killed.


==Meteorological history== ==Meteorological history==
{{storm path|Hyacinthe 1980 track.png}} {{storm path|Hyacinthe 1980 track.png}}
In the middle of January 1980, the ] persisted along 10°&nbsp;], spawning a small ] near ].<ref name="mad">{{cite journal|title=La Saison Cyclonique 1979-1980 A Madagascar|year=1981|author=La Météorlogie, Service de la Réunion|page=116|journal=Madagascar: Revue de Géographie|access-date=2013-04-13|language=French|url=http://madarevues.recherches.gov.mg/IMG/pdf/rev-geo38_7_.pdf|volume=38|issue=Janv-Juin 1981}}</ref> According to ] (MFR), a tropical depression formed about 355&nbsp;km (220&nbsp;mi) northeast of ] on January&nbsp;15.{{#tag:ref|Météo-France is the official ] for the south-west Indian Ocean, based out of Réunion.<ref>{{cite report|publisher=National Hurricane Center|date=2011-09-11|title=Worldwide Tropical Cyclone Centers|access-date=2012-08-27|url=http://www.nhc.noaa.gov/aboutrsmc.shtml}}</ref> |group="nb"}} It tracked to the west-southwest, passing north of the island on January&nbsp;17.<ref name="mf">{{cite report|publisher=Météo-France |title=Donnes de Hyacinthe |url=http://www.meteo.fr/temps/domtom/La_Reunion/base_cyclone/nom_annee/HYACINTHE_1979.html |access-date=2013-04-12 |url-status=dead |archive-url=https://web.archive.org/web/20050130042647/http://www.meteo.fr/temps/domtom/La_Reunion/base_cyclone/nom_annee/HYACINTHE_1979.html |archive-date=January 30, 2005 }}</ref> That day, the ] (JTWC) also reported that a tropical depression had developed, giving it the identifier "08S". Shortly thereafter, the JTWC upgraded the depression to a tropical storm,<ref name="jtwc">{{cite report|publisher=Joint Typhoon Warning Center|title=Best Track for Tropical Cyclone 08S|access-date=2013-04-12|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/1980/1980s-bsh/bsh081980.txt|format=TXT}}</ref> and the MFR followed suit on January&nbsp;18, naming the storm ''Hyacinthe''.<ref name="mf"/> The storm gradually intensified as it passed north of ], with 1-minute ] of 110&nbsp;km/h (70&nbsp;mph) by January&nbsp;19, according to the JTWC.<ref name="jtwc"/> That day, an ] developed,<ref name="mad"/> and MFR estimated that Hyacinthe intensified to ], with 10-minute winds of 120&nbsp;km/h (75&nbsp;mph).<ref name="mf"/> A strengthening ] to the south turned the storm northwestward,<ref name="mad"/> and on January&nbsp;20, Hyacinthe executed a small loop to the south, just offshore eastern Madagascar.<ref name="mf"/> In the middle of January 1980, the ] persisted along 10°&nbsp;], spawning a small ] near ].<ref name="mad">{{cite journal|title=La Saison Cyclonique 1979-1980 A Madagascar|year=1981|author=La Météorlogie, Service de la Réunion|page=116|journal=Madagascar: Revue de Géographie|access-date=2013-04-13|language=French|url=http://madarevues.recherches.gov.mg/IMG/pdf/rev-geo38_7_.pdf|volume=38|issue=Janv-Juin 1981}}</ref> According to ] (MFR), a tropical depression formed about {{convert|355|km|mi|abbr=on}} northeast of ] on January&nbsp;15.{{#tag:ref|Météo-France is the official ] for the south-west Indian Ocean, based out of Réunion.<ref>{{cite report|publisher=National Hurricane Center|date=2011-09-11|title=Worldwide Tropical Cyclone Centers|access-date=2012-08-27|url=http://www.nhc.noaa.gov/aboutrsmc.shtml}}</ref> |group="nb"}} It tracked to the west-southwest, passing north of the island on January&nbsp;17.<ref name="mf">{{cite report|publisher=Météo-France |title=Donnes de Hyacinthe |url=http://www.meteo.fr/temps/domtom/La_Reunion/base_cyclone/nom_annee/HYACINTHE_1979.html |access-date=2013-04-12 |url-status=dead |archive-url=https://web.archive.org/web/20050130042647/http://www.meteo.fr/temps/domtom/La_Reunion/base_cyclone/nom_annee/HYACINTHE_1979.html |archive-date=January 30, 2005 }}</ref> That day, the ] (JTWC) also reported that a tropical depression had developed, giving it the identifier "08S". Shortly thereafter, the JTWC upgraded the depression to a tropical storm,<ref name="jtwc">{{cite report|publisher=Joint Typhoon Warning Center|title=Best Track for Tropical Cyclone 08S|access-date=2013-04-12|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/1980/1980s-bsh/bsh081980.txt|format=TXT|archive-date=2013-04-06|archive-url=https://web.archive.org/web/20130406150752/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/1980/1980s-bsh/bsh081980.txt|url-status=dead}}</ref> and the MFR followed suit on January&nbsp;18, naming the storm ''Hyacinthe''.<ref name="mf"/> The storm gradually intensified as it passed north of ], with 1-minute ] of {{convert|110|km/h|mph|abbr=on}} by January&nbsp;19, according to the JTWC.<ref name="jtwc"/> That day, an ] developed,<ref name="mad"/> and MFR estimated that Hyacinthe intensified to ], with 10-minute winds of {{convert|120|km/h|mph|abbr=on}}.<ref name="mf"/> A strengthening ] to the south turned the storm northwestward,<ref name="mad"/> and on January&nbsp;20, Hyacinthe executed a small loop to the south, just offshore eastern Madagascar.<ref name="mf"/>


While moving to the south, Hyacinthe's winds steadily decreased, as the storm weakened. On January&nbsp;21, the storm weakened below tropical cyclone intensity,<ref name="mf"/> and on January&nbsp;22 the JTWC estimated winds decreased to 75&nbsp;km/h (45&nbsp;mph). The next day, it turned to the east while slowly re-intensifying. On January&nbsp;24, the JTWC upgraded Hyacinthe to the equivalent of a minimal hurricane, with winds of 120&nbsp;km/h (75&nbsp;mph). After approaching within 175&nbsp;km (120&nbsp;mi) west-southwest of Réunion, the cyclone turned to the northwest and executed another loop. The JTWC estimated that Hyacinthe reached peak winds of 130&nbsp;km/h (80&nbsp;mph) on January&nbsp;25, which the storm maintained for about 24&nbsp;hours. During that time, Hyacinthe turned to the southeast and later weakened. On January&nbsp;26, it moved near Réunion for the third time, passing about 105&nbsp;km (65&nbsp;mi) to the south.<ref name="jtwc"/> The storm turned southward, becoming ] on January&nbsp;29. Over the next two days, the remnants of Hyacinthe accelerated, turned to the east, and dissipated to the southeast of Madagascar.<ref name="mf"/> While moving to the south, Hyacinthe's winds steadily decreased, as the storm weakened. On January&nbsp;21, the storm weakened below tropical cyclone intensity,<ref name="mf"/> and on January&nbsp;22 the JTWC estimated winds decreased to {{convert|75|km/h|mph|abbr=on}}. The next day, it turned to the east while slowly re-intensifying. On January&nbsp;24, the JTWC upgraded Hyacinthe to the equivalent of a minimal hurricane, with winds of {{convert|120|km/h|mph|abbr=on}}. After approaching within {{convert|175|km|mi|abbr=on}} west-southwest of Réunion, the cyclone turned to the northwest and executed another loop. The JTWC estimated that Hyacinthe reached peak winds of {{convert|130|km/h|mph|abbr=on}} on January&nbsp;25, which the storm maintained for about 24&nbsp;hours. During that time, Hyacinthe turned to the southeast and later weakened. On January&nbsp;26, it moved near Réunion for the third time, passing about {{convert|105|km|mi|abbr=on}} to the south.<ref name="jtwc"/> The storm turned southward, becoming ] on January&nbsp;29. Over the next two days, the remnants of Hyacinthe accelerated, turned to the east, and dissipated to the southeast of Madagascar.<ref name="mf"/>


==Impact== ==Impact==
] ]
For twelve days, the circulation of the storm produced cloudiness and thunderstorms over Réunion.<ref name="risques">{{cite report|title=Synthés des Événements: Hyacinthe Cyclone Tropical (16 au 27 janvier 1980)|language=French|publisher=Les Risques Naturales á la Réunion|access-date=2013-04-13|url=http://www.risquesnaturels.re/pdf/EVENEMENTS_HISTORIQUES/evenement_historique_Hyacinthe.pdf}}</ref> Hyacinthe broke several rainfall records for tropical cyclones, becoming the wettest tropical cyclone on record.<ref name="bams"/> From January&nbsp;14 to January&nbsp;28, the storm dropped {{convert|6083|mm|in|abbr=on}} at ],<ref>{{cite report|publisher=Meteo France|title=Précipitations extrêmes|access-date=2013-04-15|url=http://www.meteo.fr/temps/domtom/La_Reunion/meteoreunion2/climatologie/records/rec_RR1.html}}</ref> just north of the ] volcano.<ref name="bams2"/> Over ten days, Hyacinthe produced 5,678&nbsp;mm (223.5&nbsp;in), also at Commerson.<ref name="tcfaq">{{cite report|author=Chris Landsea|date=2007-03-12|title=Subject: E4) What are the largest rainfalls associated with tropical cyclones?|publisher=Hurricane Research Division|access-date=2013-04-12|url=http://www.aoml.noaa.gov/hrd/tcfaq/E4.html}}</ref> In twelve hours, Hyacinthe dropped 1,095&nbsp;mm (43.1&nbsp;in) of rainfall at ], just {{convert|49|mm|in|abbr=on}} shy of the record set by Cyclone Denise in 1966.<ref name="bams"/> The highest daily total was on January&nbsp;25, when {{convert|1140|mm|in|abbr=on}} fell at Commerson.<ref name="risques"/> Over a three-day period, the storm dropped 3,240&nbsp;mm (127.6&nbsp;in) at Commerson, as well as 4,300&nbsp;mm (169&nbsp;in) over a five-day period ending on January&nbsp;28.<ref name="bams">{{cite journal|pages=856, 858|title=Extreme Weather Records|author=Randall S. Cerveny|journal=Bulletin of the American Meteorological Society|date=June 2007|volume=88 |issue=6 |doi=10.1175/BAMS-88-6-853|display-authors=etal|bibcode = 2007BAMS...88..853C |doi-access=free}}</ref> Only a small portion of the island near ] received less than 1&nbsp;m (3.3&nbsp;ft) of rainfall, and totals increased further inland,<ref name="risques"/> with over 2&nbsp;m (6.6&nbsp;ft) recorded at four locations.<ref name="bams2">{{cite journal|page=606|title=World-Record Rainfalls During Tropical Cyclone Gamede|author=Hubert Quetelard|journal=Bulletin of the American Meteorological Society|date=May 2009|volume=90 |issue=5 |doi=10.1175/2008BAMS2660.1|display-authors=etal|bibcode = 2009BAMS...90..603Q |doi-access=free}}</ref> Such heavy rainfall typically occurs on the island when tropical cyclones approach, owing to ] in the mountainous interior.<ref name="bams2"/> For twelve days, the circulation of the storm produced cloudiness and thunderstorms over Réunion.<ref name="risques">{{cite report|title=Synthés des Événements: Hyacinthe Cyclone Tropical (16 au 27 janvier 1980)|language=French|publisher=Les Risques Naturales á la Réunion|access-date=2013-04-13|url=http://www.risquesnaturels.re/pdf/EVENEMENTS_HISTORIQUES/evenement_historique_Hyacinthe.pdf}}</ref> Hyacinthe broke several rainfall records for tropical cyclones, becoming the wettest tropical cyclone on record.<ref name="bams"/> From January&nbsp;14 to January&nbsp;28, the storm dropped {{convert|6083|mm|in|abbr=on}} at ],<ref>{{cite report|publisher=Meteo France|title=Précipitations extrêmes|access-date=2013-04-15|url=http://www.meteo.fr/temps/domtom/La_Reunion/meteoreunion2/climatologie/records/rec_RR1.html}}</ref> just north of the ] volcano.<ref name="bams2"/> Over ten days, Hyacinthe produced {{convert|5,678|mm|in|abbr=on}}, also at Commerson.<ref name="tcfaq">{{cite report|author=Chris Landsea|date=2007-03-12|title=Subject: E4) What are the largest rainfalls associated with tropical cyclones?|publisher=Hurricane Research Division|access-date=2013-04-12|url=http://www.aoml.noaa.gov/hrd/tcfaq/E4.html}}</ref> In twelve hours, Hyacinthe dropped {{convert|1,095|mm|in|abbr=on}} of rainfall at ], just {{convert|49|mm|in|abbr=on}} shy of the record set by Cyclone Denise in 1966.<ref name="bams"/> The highest daily total was on January&nbsp;25, when {{convert|1140|mm|in|abbr=on}} fell at Commerson.<ref name="risques"/> Over a three-day period, the storm dropped {{convert|3,240|mm|in|abbr=on}} at Commerson, as well as {{convert|4,300|mm|in|abbr=on}} over a five-day period ending on January&nbsp;28.<ref name="bams">{{cite journal|pages=856, 858|title=Extreme Weather Records|author=Randall S. Cerveny|journal=Bulletin of the American Meteorological Society|date=June 2007|volume=88 |issue=6 |doi=10.1175/BAMS-88-6-853|display-authors=etal|bibcode = 2007BAMS...88..853C |doi-access=free}}</ref> Only a small portion of the island near ] received less than {{convert|1|m|ft|abbr=on}} of rainfall, and totals increased further inland,<ref name="risques"/> with over {{convert|2|m|ft|abbr=on}} recorded at four locations.<ref name="bams2">{{cite journal|page=606|title=World-Record Rainfalls During Tropical Cyclone Gamede|author=Hubert Quetelard|journal=Bulletin of the American Meteorological Society|date=May 2009|volume=90 |issue=5 |doi=10.1175/2008BAMS2660.1|display-authors=etal|bibcode = 2009BAMS...90..603Q |doi-access=free}}</ref> Such heavy rainfall typically occurs on the island when tropical cyclones approach, owing to ] in the mountainous interior.<ref name="bams2"/>


In addition to the rainfall, Hyacinthe produced a minimum ] of {{convert|977.8|mbar|inHg|abbr=on}} at Saint-Pierre on January&nbsp;27. Wind gusts reached {{convert|150|km/h|mph|abbr=on}} in ], although the mountainous portion of the island reported winds as strong as {{convert|180|km/h|mph|abbr=on}}. Wave action was not severe due to the quick changes in track and lack of significant intensity. There was some ] along western-facing beaches, and ] sustained damage to coastal properties.<ref name="risques"/> However, any major damage caused by the storm was largely due to the heavy rainfall. The ] reported increased flow, reaching a ] of about 300&nbsp;m<sup>3</sup>/s (10,500&nbsp;ft<sup>3</sup>/s).<ref>{{cite web|author=Naomi Erika |author2=Karine Élodie |title=Le Cyclone Hyacinthe |access-date=2013-04-12 |publisher=Collège Les Tamarins |url=http://pedagogie2.ac-reunion.fr/cotamarp/temps/cyclone/historique/hyacinthegroupe10.htm |language=French |url-status=dead |archive-url=https://web.archive.org/web/20160307160708/http://pedagogie2.ac-reunion.fr/cotamarp/temps/cyclone/historique/hyacinthegroupe10.htm |archive-date=2016-03-07 }}</ref> Along ], river flooding entered five houses. Floods washed out a {{convert|30|m|ft|abbr=on}} and a {{convert|60|m|ft|abbr=on}} portion of a highway along a ravine near Chaudron. Along ], traffic was disrupted after rocks blocked the roadway. In ], floods washed out a bridge and {{convert|200|m|ft|abbr=on}} of roads.<ref name="risques"/> About half of the roads on Réunion were damaged,<ref name="mwl"/> and road damage was estimated at $40&nbsp;million (1980&nbsp;USD, 161.3&nbsp;million francs). The rain caused widespread mudslides, including hundreds near ] and ].<ref name="risques"/> Three towns were temporarily isolated,<ref name="risques"/> including ] which was cut off for about eight days,<ref>{{cite news|title=Salazie en pole position dans la course des téléphériques|date=2013-04-10|newspaper=Le Journal de I'île Reunion|access-date=2013-04-13|url=http://www.clicanoo.re/364128-salazie-en-pole-position-dans-la-course-des-telepheriques.html}}</ref> Helicopters delivered food and clothing to the villages.<ref name="risques"/> In addition to the rainfall, Hyacinthe produced a minimum ] of {{convert|977.8|mbar|inHg|abbr=on}} at Saint-Pierre on January&nbsp;27. Wind gusts reached {{convert|150|km/h|mph|abbr=on}} in ], although the mountainous portion of the island reported winds as strong as {{convert|180|km/h|mph|abbr=on}}. Wave action was not severe due to the quick changes in track and lack of significant intensity. There was some ] along western-facing beaches, and ] sustained damage to coastal properties.<ref name="risques"/> However, any major damage caused by the storm was largely due to the heavy rainfall. The ] reported increased flow, reaching a ] of about 300&nbsp;m<sup>3</sup>/s (10,500&nbsp;ft<sup>3</sup>/s).<ref>{{cite web|author=Naomi Erika |author2=Karine Élodie |title=Le Cyclone Hyacinthe |access-date=2013-04-12 |publisher=Collège Les Tamarins |url=http://pedagogie2.ac-reunion.fr/cotamarp/temps/cyclone/historique/hyacinthegroupe10.htm |language=French |url-status=dead |archive-url=https://web.archive.org/web/20160307160708/http://pedagogie2.ac-reunion.fr/cotamarp/temps/cyclone/historique/hyacinthegroupe10.htm |archive-date=2016-03-07 }}</ref> Along ], river flooding entered five houses. Floods washed out a {{convert|30|m|ft|abbr=on}} and a {{convert|60|m|ft|abbr=on}} portion of a highway along a ravine near Chaudron. Along ], traffic was disrupted after rocks blocked the roadway. In ], floods washed out a bridge and {{convert|200|m|ft|abbr=on}} of roads.<ref name="risques"/> About half of the roads on Réunion were damaged,<ref name="mwl"/> and road damage was estimated at $40&nbsp;million (1980&nbsp;USD, 161.3&nbsp;million francs). The rain caused widespread mudslides, including hundreds near ] and ].<ref name="risques"/> Three towns were temporarily isolated,<ref name="risques"/> including ] which was cut off for about eight days,<ref>{{cite news|title=Salazie en pole position dans la course des téléphériques|date=2013-04-10|newspaper=Le Journal de I'île Reunion|access-date=2013-04-13|url=http://www.clicanoo.re/364128-salazie-en-pole-position-dans-la-course-des-telepheriques.html}}{{Dead link|date=August 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Helicopters delivered food and clothing to the villages.<ref name="risques"/>


Throughout Réunion, Hyacinthe killed 25&nbsp;people and left 7,000 homeless.<ref>{{cite report|author=Office of U.S. Foreign Disaster Assistance|title=Significant Data on Major Disasters Worldwide 1900-present|date=August 1993|access-date=2013-04-12|url=http://pdf.usaid.gov/pdf_docs/PNABP986.pdf}}</ref> Four of the deaths occurred after a house was washed away at Petite-Île. A school was destroyed in ]. The storm caused power and water outages, and about 30% of the island temporarily lost phone service. Hyacinthe damaged 1,712&nbsp;houses and destroyed another 288; housing damage totaled about $42&nbsp;million (1980&nbsp;USD, 170&nbsp;million francs). Flooding caused $48&nbsp;million (1980&nbsp;USD, 194&nbsp;million francs) in agricultural damage, including about 1,000 killed cattle and near-total losses to ]s, ]es, and ]s. Overall damage was estimated at $167&nbsp;million (676&nbsp;million francs).<ref name="risques"/> Many records set by the storm were broken by ] in 2007, including the rainfall accumulations from three to eight days.<ref>{{cite journal|page=577|title=State of the Climate in 2007|author=D. H. Levinson|author2=J. H. Lawrimore|journal=Bulletin of the American Meteorological Society|access-date=2013-04-12|date=July 2008|volume=89 |issue=7 |url=http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-89-7-StateoftheClimate|format=PDF|doi=10.1175/BAMS-89-7-StateoftheClimate|bibcode=2008BAMS...89S...1L}}{{Dead link|date=April 2020 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> However, Hyacinthe retained its status as the wettest overall tropical cyclone.<ref name="tcfaq"/> Throughout Réunion, Hyacinthe killed 25&nbsp;people and left 7,000 homeless.<ref>{{cite report|author=Office of U.S. Foreign Disaster Assistance|title=Significant Data on Major Disasters Worldwide 1900-present|date=August 1993|access-date=2013-04-12|url=http://pdf.usaid.gov/pdf_docs/PNABP986.pdf}}</ref> Four of the deaths occurred after a house was washed away at Petite-Île. A school was destroyed in ]. The storm caused power and water outages, and about 30% of the island temporarily lost phone service. Hyacinthe damaged 1,712&nbsp;houses and destroyed another 288; housing damage totaled about $42&nbsp;million (1980&nbsp;USD, 170&nbsp;million francs). Flooding caused $48&nbsp;million (1980&nbsp;USD, 194&nbsp;million francs) in agricultural damage, including about 1,000 killed cattle and near-total losses to ]s, ]es, and ]s. Overall damage was estimated at $167&nbsp;million (676&nbsp;million francs).<ref name="risques"/> Many records set by the storm were broken by ] in 2007, including the rainfall accumulations from three to eight days.<ref>{{cite journal|page=577|title=State of the Climate in 2007|author=D. H. Levinson|author2=J. H. Lawrimore|journal=Bulletin of the American Meteorological Society|access-date=2013-04-12|date=July 2008|volume=89 |issue=7 |url=http://journals.ametsoc.org/doi/pdf/10.1175/BAMS-89-7-StateoftheClimate|format=PDF|doi=10.1175/BAMS-89-7-StateoftheClimate|bibcode=2008BAMS...89S...1L}}{{Dead link|date=April 2020 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> However, Hyacinthe retained its status as the wettest overall tropical cyclone.<ref name="tcfaq"/>


Elsewhere, Hyacinthe affected Madagascar as a weaker storm. Wind gusts reached {{convert|126|km/h|mph|abbr=on}} at ] and {{convert|111|km/h|mph|abbr=on}} on Île Sainte-Marie. At the same two locations, rainfall reached {{convert|207|mm|in|abbr=on}} and {{convert|134|mm|in|abbr=on}}, respectively.<ref name="mad"/> On Mauritius, the storm's passage forced the main port to close.<ref name="mwl">{{cite journal|page=201|title=Hurricane Alley|author=Dick DeAngelis|journal=Mariners Weather Log|date=May–June 1980|volume=24|number=3|publisher=United States Department of Commerce}}</ref> Elsewhere, Hyacinthe affected Madagascar as a weaker storm. Wind gusts reached {{convert|126|km/h|mph|abbr=on}} at ] and {{convert|111|km/h|mph|abbr=on}} on Île Sainte-Marie. At the same two locations, rainfall reached {{convert|207|and|134|mm|in|abbr=on}}, respectively.<ref name="mad"/> On Mauritius, the storm's passage forced the main port to close.<ref name="mwl">{{cite journal|page=201|title=Hurricane Alley|author=Dick DeAngelis|journal=Mariners Weather Log|date=May–June 1980|volume=24|number=3|publisher=United States Department of Commerce}}</ref>


==See also== ==See also==
{{Portal|Tropical cyclones}} {{Portal|Tropical cyclones}}
{{Commons category|Hyacinthe cyclone}} {{Commons category|Cyclone Hyacinthe}}
* ] * ]
* ] * ]
* ] (2002) &ndash; produced heavy rainfall on Renuion. * ] (2002) &ndash; produced heavy rainfall on Réunion.


==Notes== ==Notes==

Latest revision as of 11:33, 22 November 2024

South-West Indian cyclone in 1980

Cyclone Hyacinthe
Cyclone Hyacinthe on January 25
Meteorological history
FormedJanuary 15, 1980 (1980-01-15)
ExtratropicalJanuary 29, 1980
DissipatedJanuary 31, 1980 (1980-02-01)
Intense tropical cyclone
10-minute sustained (MF)
Highest winds165 km/h (105 mph)
Category 1-equivalent tropical cyclone
1-minute sustained (SSHWS/JTWC)
Highest winds130 km/h (80 mph)
Overall effects
Fatalities25
Damage$167 million (1980 USD)
Areas affectedMauritius, Réunion, Madagascar
IBTrACSEdit this at Wikidata
Part of the 1979–80 South-West Indian Ocean cyclone season

Cyclone Hyacinthe was the wettest tropical cyclone on record worldwide. The eighth named storm of the season, Hyacinthe formed on January 15, 1980, to the northeast of Mauritius in the southern Indian Ocean. Initially it moved to the west-southwest, and while slowly intensifying it passed north of the French overseas department of Réunion. On January 19, Météo-France estimated that the storm had intensified to a tropical cyclone. Hyacinthe looped to the south of eastern Madagascar and weakened, although it restrengthened after turning to the east. The storm executed another loop to the southwest of Réunion, passing near the island for a second and later third time. Hyacinthe became extratropical on January 29 after turning southward, dissipating two days later.

For twelve days, Hyacinthe dropped torrential rainfall on Réunion; nearly all of the island received more than 1 m (3.3 ft) of precipitation. Over a 15-day period from January 14 to January 28, 6,083 mm (239.5 in) of rainfall were recorded at Commerson Crater, a volcano caldera. The heaviest rainfall occurred through a process called orographic lift in the mountainous interior, leading to hundreds of landslides. Widespread floods damaged half the roads on Réunion and isolated three villages. Hyacinthe caused heavy damage to crops and damaged or destroyed 2,000 houses. Losses from the storm totaled $167 million (1980 USD, 676 million francs), and 25 people were killed.

Meteorological history

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key Saffir–Simpson scale   Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown Storm type circle Tropical cyclone square Subtropical cyclone triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

In the middle of January 1980, the Intertropical Convergence Zone persisted along 10° S, spawning a small low-level circulation near St. Brandon. According to Météo-France (MFR), a tropical depression formed about 355 km (221 mi) northeast of Mauritius on January 15. It tracked to the west-southwest, passing north of the island on January 17. That day, the Joint Typhoon Warning Center (JTWC) also reported that a tropical depression had developed, giving it the identifier "08S". Shortly thereafter, the JTWC upgraded the depression to a tropical storm, and the MFR followed suit on January 18, naming the storm Hyacinthe. The storm gradually intensified as it passed north of Réunion, with 1-minute winds of 110 km/h (68 mph) by January 19, according to the JTWC. That day, an eye developed, and MFR estimated that Hyacinthe intensified to tropical cyclone status, with 10-minute winds of 120 km/h (75 mph). A strengthening anticyclone to the south turned the storm northwestward, and on January 20, Hyacinthe executed a small loop to the south, just offshore eastern Madagascar.

While moving to the south, Hyacinthe's winds steadily decreased, as the storm weakened. On January 21, the storm weakened below tropical cyclone intensity, and on January 22 the JTWC estimated winds decreased to 75 km/h (47 mph). The next day, it turned to the east while slowly re-intensifying. On January 24, the JTWC upgraded Hyacinthe to the equivalent of a minimal hurricane, with winds of 120 km/h (75 mph). After approaching within 175 km (109 mi) west-southwest of Réunion, the cyclone turned to the northwest and executed another loop. The JTWC estimated that Hyacinthe reached peak winds of 130 km/h (81 mph) on January 25, which the storm maintained for about 24 hours. During that time, Hyacinthe turned to the southeast and later weakened. On January 26, it moved near Réunion for the third time, passing about 105 km (65 mi) to the south. The storm turned southward, becoming extratropical on January 29. Over the next two days, the remnants of Hyacinthe accelerated, turned to the east, and dissipated to the southeast of Madagascar.

Impact

Washed out road in Saint-Pierre, Réunion

For twelve days, the circulation of the storm produced cloudiness and thunderstorms over Réunion. Hyacinthe broke several rainfall records for tropical cyclones, becoming the wettest tropical cyclone on record. From January 14 to January 28, the storm dropped 6,083 mm (239.5 in) at Commerson Crater, just north of the Piton de la Fournaise volcano. Over ten days, Hyacinthe produced 5,678 mm (223.5 in), also at Commerson. In twelve hours, Hyacinthe dropped 1,095 mm (43.1 in) of rainfall at Grand Îlet, just 49 mm (1.9 in) shy of the record set by Cyclone Denise in 1966. The highest daily total was on January 25, when 1,140 mm (45 in) fell at Commerson. Over a three-day period, the storm dropped 3,240 mm (128 in) at Commerson, as well as 4,300 mm (170 in) over a five-day period ending on January 28. Only a small portion of the island near Saint-Pierre received less than 1 m (3.3 ft) of rainfall, and totals increased further inland, with over 2 m (6.6 ft) recorded at four locations. Such heavy rainfall typically occurs on the island when tropical cyclones approach, owing to orographic enhancement in the mountainous interior.

In addition to the rainfall, Hyacinthe produced a minimum barometric pressure of 977.8 mbar (28.87 inHg) at Saint-Pierre on January 27. Wind gusts reached 150 km/h (93 mph) in Saint-Denis, although the mountainous portion of the island reported winds as strong as 180 km/h (110 mph). Wave action was not severe due to the quick changes in track and lack of significant intensity. There was some beach erosion along western-facing beaches, and Pointe des Galets sustained damage to coastal properties. However, any major damage caused by the storm was largely due to the heavy rainfall. The Rivière Langevin reported increased flow, reaching a discharge of about 300 m/s (10,500 ft/s). Along Rivière-du-Mat les Bas, river flooding entered five houses. Floods washed out a 30 m (98 ft) and a 60 m (200 ft) portion of a highway along a ravine near Chaudron. Along Route nationale 1, traffic was disrupted after rocks blocked the roadway. In Petite-Île, floods washed out a bridge and 200 m (660 ft) of roads. About half of the roads on Réunion were damaged, and road damage was estimated at $40 million (1980 USD, 161.3 million francs). The rain caused widespread mudslides, including hundreds near Salazie and Cilaos. Three towns were temporarily isolated, including Hell-Bourg which was cut off for about eight days, Helicopters delivered food and clothing to the villages.

Throughout Réunion, Hyacinthe killed 25 people and left 7,000 homeless. Four of the deaths occurred after a house was washed away at Petite-Île. A school was destroyed in Saint-Louis. The storm caused power and water outages, and about 30% of the island temporarily lost phone service. Hyacinthe damaged 1,712 houses and destroyed another 288; housing damage totaled about $42 million (1980 USD, 170 million francs). Flooding caused $48 million (1980 USD, 194 million francs) in agricultural damage, including about 1,000 killed cattle and near-total losses to bananas, mangoes, and avocados. Overall damage was estimated at $167 million (676 million francs). Many records set by the storm were broken by Cyclone Gamede in 2007, including the rainfall accumulations from three to eight days. However, Hyacinthe retained its status as the wettest overall tropical cyclone.

Elsewhere, Hyacinthe affected Madagascar as a weaker storm. Wind gusts reached 126 km/h (78 mph) at Mananjary and 111 km/h (69 mph) on Île Sainte-Marie. At the same two locations, rainfall reached 207 and 134 mm (8.1 and 5.3 in), respectively. On Mauritius, the storm's passage forced the main port to close.

See also

Notes

  1. All damage totals are reported in 1980 United States dollars with the original French franc total in parentheses.
  2. Météo-France is the official Regional Specialized Meteorological Center for the south-west Indian Ocean, based out of Réunion.

References

  1. ^ La Météorlogie, Service de la Réunion (1981). "La Saison Cyclonique 1979-1980 A Madagascar" (PDF). Madagascar: Revue de Géographie (in French). 38 (Janv-Juin 1981): 116. Retrieved 2013-04-13.
  2. Worldwide Tropical Cyclone Centers (Report). National Hurricane Center. 2011-09-11. Retrieved 2012-08-27.
  3. ^ Donnes de Hyacinthe (Report). Météo-France. Archived from the original on January 30, 2005. Retrieved 2013-04-12.
  4. ^ Best Track for Tropical Cyclone 08S (Report). Joint Typhoon Warning Center. Archived from the original (TXT) on 2013-04-06. Retrieved 2013-04-12.
  5. ^ Synthés des Événements: Hyacinthe Cyclone Tropical (16 au 27 janvier 1980) (PDF) (Report) (in French). Les Risques Naturales á la Réunion. Retrieved 2013-04-13.
  6. ^ Randall S. Cerveny; et al. (June 2007). "Extreme Weather Records". Bulletin of the American Meteorological Society. 88 (6): 856, 858. Bibcode:2007BAMS...88..853C. doi:10.1175/BAMS-88-6-853.
  7. Précipitations extrêmes (Report). Meteo France. Retrieved 2013-04-15.
  8. ^ Hubert Quetelard; et al. (May 2009). "World-Record Rainfalls During Tropical Cyclone Gamede". Bulletin of the American Meteorological Society. 90 (5): 606. Bibcode:2009BAMS...90..603Q. doi:10.1175/2008BAMS2660.1.
  9. ^ Chris Landsea (2007-03-12). Subject: E4) What are the largest rainfalls associated with tropical cyclones? (Report). Hurricane Research Division. Retrieved 2013-04-12.
  10. Naomi Erika; Karine Élodie. "Le Cyclone Hyacinthe" (in French). Collège Les Tamarins. Archived from the original on 2016-03-07. Retrieved 2013-04-12.
  11. ^ Dick DeAngelis (May–June 1980). "Hurricane Alley". Mariners Weather Log. 24 (3). United States Department of Commerce: 201.
  12. "Salazie en pole position dans la course des téléphériques". Le Journal de I'île Reunion. 2013-04-10. Retrieved 2013-04-13.
  13. Office of U.S. Foreign Disaster Assistance (August 1993). Significant Data on Major Disasters Worldwide 1900-present (PDF) (Report). Retrieved 2013-04-12.
  14. D. H. Levinson; J. H. Lawrimore (July 2008). "State of the Climate in 2007" (PDF). Bulletin of the American Meteorological Society. 89 (7): 577. Bibcode:2008BAMS...89S...1L. doi:10.1175/BAMS-89-7-StateoftheClimate. Retrieved 2013-04-12.
Categories: