1988–89 South-West Indian Ocean cyclone season

Cyclone season in the Southwest Indian Ocean SWI 1989 1988-89 South-West Indian Cyclone Season Summary.png November 1, 1988 April 11, 1989 Hanitra and Krisy 940 82 10 12 12 11 6 11 217 1986–87, 1987–88, 1988–89, 1989–90, 1990–91 1988–89 Australian region cyclone season 1988–89 South Pacific cyclone season The 1988–89 South-West Indian Ocean cyclone season was an active season that featured several storms moving near or over the Mascarene Islands or Madagascar. The eleven tropical storms was two greater than average, of which five became tropical cyclones – a storm with maximum sustained winds over 10 minutes of 120 km/h mph on or greater. Storms were monitored by the Météo-France office (MFR) on Réunion island in an official capacity, as well as the American Joint Typhoon Warning Center (JTWC) on an unofficial base. The season began early with Moderate Tropical Storm Adelinina forming in early November, and continued through the middle of April. Adelinina was one of two storms to form in November, the other being Tropical Cyclone Barisaona which crossed from the adjacent Australian basin. After no activity in December, there were four storms in January, including the most notable of the season – Cyclone Firinga. The storm caused ₣1 billion (1989 francs, $157 million 1989 USD) in damage when it struck Réunion. Tropical Cyclone Calasanjy also formed in the month, causing heavy damage when it struck western Madagascar. Three storms formed in February, the second of which, Hanitra, also crossed from the Australian basin. This storm, as well as later Tropical Cyclone Krisy, were the strongest of the season, attaining peak 10‑minute winds of 150 km/h mph on. Tropical Cyclone Jinabo was the first of three storms to form in quick succession in late March, the others being Krisy and Tropical Storm Lezissy. Jinabo originated off the east coast of Madagascar and dropped heavy rainfall on Réunion. Krisy took a similar track and passed within 100 km mi on of Rodrigues and Mauritius, causing heavy crop damage. Lastly, Tropical Storm Lezissy merged with Krisy and dissipated on April 11 to end the season. Seasonal summary During the season, the Météo-France office (MFR) on Réunion island issued warnings in tropical cyclones within the basin. Using satellite imagery from National Oceanic and Atmospheric Administration, the agency estimated intensity through the Dvorak technique, and warned on tropical cyclones in the region from the coast of Africa to 90° E, south of the equator. At the time, the World Meteorological Organization recognized the MFR as a Regional Tropical Cyclone Advisory Centre, and would later label the agency as a Regional Specialized Meteorological Center in 1993.Philippe Caroff June 2011 Operational procedures of TC satellite analysis at RSMC La Reunion World Meteorological Organization 2013-04-22 http://www.wmo.int/pages/prog/www/tcp/documents/RSMCLaReunionforIWSATC.pdf etal The Joint Typhoon Warning Center (JTWC), which is a joint United States Navy – United States Air Force task force, also issued tropical cyclone warnings for the southwestern Indian Ocean. The season's 11 named storms is slightly above the long term average, while the five tropical cyclones – a storm attaining maximum sustained winds of at least 120 km/h mph on – was the same as the long term average.Chris Landsea Sandy Delgado Subject: E10) What are the average, most, and least tropical cyclones occurring in each basin? Frequently Asked Questions 2014-05-01 Hurricane Research Division 2014-10-13 http://www.aoml.noaa.gov/hrd/tcfaq/E10.html There was an ongoing La Niña event in the middle of the season.2 Darwin Regional Specialised Meteorological Centre Bureau of Meteorology 8 1 January 1989 Darwin Tropical Diagnostic Statement 2015-01-16 http://www.bom.gov.au/climate/ntregion/statements/tropical/dtds-198901.pdf The MFR considered the tropical cyclone year to begin on August 1 and continue to July 31 of the following year. In addition to the storms monitored by the MFR, the JTWC tracked a storm in March that formed off the west coast of Madagascar on March 7. It moved generally to the south or south-southeast, failing to intensify beyond 1‑minute winds of 65 km/h mph on. After passing west of Madagascar, the storm dissipated on March 11.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 HSK2489 (1989067S17041) Bulletin of the American Meteorological Society 2015-01-17 1989067S17041 https://web.archive.org/web/20151222114719/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989067S17041 2015-12-22 live Systems Moderate Tropical Storm Adelinina SWI November 1 November 8 Adelinina Nov 3 1988 0900Z.png Adelinina 1988 path.png 44 75 984 The Intertropical Convergence Zone (ITCZ) over the eastern Indian Ocean was the origin of what would become Tropical Storm Adelinina.Global tropical/extratropical cyclone climatic atlas Tropical Depression Adelinina, 30 October-7 November 1996 National Climatic Data Center 2015-01-20 SWI 1988_103 Darwin Regional Specialised Meteorological Centre Bureau of Meteorology 7 11 November 1988 Darwin Tropical Diagnostic Statement 2015-01-14 http://www.bom.gov.au/climate/ntregion/statements/tropical/dtds-198811.pdf 2015-09-24 https://web.archive.org/web/20150924003730/http://www.bom.gov.au/climate/ntregion/statements/tropical/dtds-198811.pdf dead On October 30, the JTWC began monitoring the system to the south of Diego Garcia,Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Adelinina (1988304S08077) Bulletin of the American Meteorological Society 2015-01-14 1988304S08077 https://web.archive.org/web/20151002234828/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1988304S08077 2015-10-02 live and classified it as Tropical Cyclone 01S on November 1.Joint Typhoon Warning Center iii, 183–185 Annual Tropical Cyclone Report 2015-01-14 http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/1989atcr.pdf dead https://web.archive.org/web/20130221101605/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/1989atcr.pdf 2013-02-21 On the next day, the MFR began issuing advisories on the system and quickly upgraded it to Moderate Tropical Storm Adelinina. The agency estimated 10‑minute winds of 44 kn km/h mph out on 5 on as the storm moved to the southeast. By contrast, the JTWC assessed that Adelinina rapidly intensified into the equivalent of a minimal hurricane on November 2, estimating peak 1‑minute winds of 75 kn km/h mph out on 5 on the next day. Without strengthening further, Adelinina began weakening on November 4, turning to the east and later turning back to the northwest; the track was influenced by a ridge to the south. Adelinina completed its five-day loop on November 7 as it crossed westward over its former track. That day, the MFR re-upgraded the system to tropical storm status, but discontinued advisories on November 8. Tropical Cyclone Barisaona SWI November 12 (Entered basin) November 23 Barisaona Nov 16 1988 0857Z.png Barisaona 1988 path.png 72 100 954 On November 5, a tropical depression formed in the Australian basin south of Indonesia from a trough. It moved slowly and erratically to the west, only gradually organizing. On November 8, the JTWC classified the system as Tropical Cyclone 02S. Before entering the south-west Indian Ocean, the Bureau of Meteorology (BoM) estimated that the system reached 10‑minute winds of 105 km/h mph on. However, the BoM did not include the system in its annual summary of the season,Australian Bureau of Meteorology March 1991 2015-01-15 The South Pacific and southeast Indian Ocean tropical cyclone season 1988-89 http://www.bom.gov.au/amm/docs/1991/drosdowsky.pdf Drosdowsky L. Woodcock F. 2015-09-23 https://web.archive.org/web/20150923193558/http://www.bom.gov.au/amm/docs/1991/drosdowsky.pdf dead and at the time it was considered a tropical depression in the Australian region.Global tropical/extratropical cyclone climatic atlas Tropical Cyclone Barisaona (ex-01S), 12–22 November 1996 National Climatic Data Center 2015-01-20 SWI 1988_11 On November 12, the system crossed 90° E, classified as Moderate Tropical Storm Barisaona by the MFR. By that time, the storm was moving steadily to the west-southwest, steered by a ridge to the south, and it attained tropical cyclone status two days later. Also on November 14, the MFR estimated peak 10‑minute winds of 135 km/h mph on, based on the well-defined eye. Barisaona briefly weakened to tropical storm status on November 15, only to regain tropical cyclone status the next day. On November 16, the JTWC estimated peak 1‑minute winds of 185 km/h mph on. A passing trough turned the cyclone to the southwest. It gradually weakened thereafter, and JTWC discontinued advisories on November 20. The MFR tracked Barisaona for a few more days as a ridge steered the system back to the north; the system dissipated on November 23.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Barisoana (1988310S08100) Bulletin of the American Meteorological Society 2015-01-14 1988310S08100 https://web.archive.org/web/20150930173123/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1988310S08100 2015-09-30 live Tropical Cyclone Calasanjy SWI Calasanjy Jan 14 1989 1052Z.png Calasanjy 1989 path.png January 6 January 15 72 75 955 The origins of Calasanjy were from the ITCZ in the Mozambique Channel off the northwest coast of Madagascar in early January.Global tropical/extratropical cyclone climatic atlas Tropical Cyclone Calasanjy, 6–17 January 1996 National Climatic Data Center 2015-01-20 SWI 1989_1 An area of disturbed weather moved southwestward at first, but gradually curved to the northwest. On January 9, the MFR classified it as a tropical disturbance, but upgraded it to Moderate Tropical Storm Calasanjy on the next day.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Calasanjy (1989006S15044) Bulletin of the American Meteorological Society 2015-01-15 1989006S15044 https://web.archive.org/web/20160305143913/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989006S15044 2016-03-05 live Also on January 10, the JTWC designated the storm as Tropical Cyclone 06S. By that time, Calasanjy was just off the east coast of Mozambique, although it executed a tight loop to the southeast spare a landfall. Moving along its former path, the storm gradually intensified – the JTWC upgraded it to the equivalent of a minimal hurricane on January 12, and the MFR upgraded Calasanjy to tropical cyclone status two days later. Both agencies estimated peak winds of around 135 km/h mph on. Later on January 14, Calasanjy made landfall in western Madagascar near Morondava, and soon after moving ashore it turned to the southwest, its motion changed due to a ridge to the southeast. It weakened to tropical depression status before re-emerging into the Mozambique Channel on January 16, becoming extratropical the next day. Cyclone Calasanjy caused heavy damage in western Madagascar, with a peak wind gust of 195 km/h mph on in Maintirano.Los Angeles Times 1989-01-16 Cyclone Hits Madagascar Reuters 2015-01-15 https://www.latimes.com/archives/la-xpm-1989-01-16-mn-421-story.html The storm caused the Morondava River to increase to a flow rate of 2,702 m3/s (95,420 ft3/s), with a peak height of 4.08 m ft on during the storm.30 Etude de la vulnérabilité des ressources en eau aux changements climatiques, modélisation par le logiciel WEAP 21: cas du bassin versant de Morondava University of Antananarivo 2007-09-27 2015-01-15 fr http://www.weap21.org/downloads/Madagascar.pdf Reforms enacted after previous cyclones Kamisy and Honorinina helped facilitate repairs following this storm.http://www-wds.worldbank.org/servlet/WDSContentServer/IW3P/IB/1992/05/11/000009265_3960925213356/Rendered/PDF/multi_page.pdf 2015-02-20 World Bank Cyclone Rehabilitation Project 1992-05-11 Tropical Depression Dona SWI January 10 January 14 Dona 1989 path.png Dona Jan 11 1989 0942Z.png 28 35 997 On January 10, a tropical disturbance formed east-northeast of St. Brandon, which is a small archipelago belonging to Mauritius. It originally consisted of a small, weak vortex, although it gradually organized. The system moved to the southwest and quickly intensified into a tropical depression, reaching peak winds of 50 km/h mph on. Despite it only being a depression, the Mauritius Meteorological Service named the depression Dona due to the threat to the island. The system turned more to the south ahead of a trough, passing east of St. Brandon and later to the west of Rodrigues. Later, Dona turned to the southeast, dissipating on January 14 without affecting land.Global tropical/extratropical cyclone climatic atlas Tropical Depression Dona, 10–15 January 1996 National Climatic Data Center 2015-01-20 SWI 1989_2 Tropical Cyclone Edme SWI January 20 January 27 Edme Jan 23 1989 0900Z.png Edme 1989 path.png 65 115 966 On January 20, a tropical disturbance formed about 240 km mi on west of the Cocos Islands.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Edme (1989018S10082) Bulletin of the American Meteorological Society 2015-01-15 1989018S10082 https://web.archive.org/web/20151222141201/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989018S10082 2015-12-22 live That day, the JTWC classified it as Tropical Cyclone 07S, although it had monitored the system for the preceding three days. The nascent disturbance moved to the south and gradually intensified, becoming Moderate Tropical Storm Edme on January 21. On the next day, the JTWC upgraded the storm to the equivalent of a minimal hurricane, as Edme was aided by favorable upper-level conditions beneath an anticyclone. On January 23, the agency estimated peak 1‑minute winds of 215 km/h mph on; however, the MFR only assessed peak 10‑minute winds of 120 km/h mph on. By the time of peak intensity, Edme had begun moving southwestward and thereafter weakened due to increasing wind shear, imparted by a trough in the Westerlies. On January 26, the storm weakened to tropical depression status as it turned to the south. Edme dissipated the following day. Tropical Cyclone Firinga SWI January 24 February 1 Firinga Jan 29 1989 1001Z.png Firinga 1989 path.png 72 90 954 Cyclone Firinga Firinga developed on January 24 well to the northeast of Mauritius. After initially moving to the southeast, it began a southwest motion that it would continue for several days. During that time, the system intensified into Moderate Tropical Storm Firinga, and the JTWC upgraded it to the equivalent of a minimal hurricane on January 28. Early the next day, it intensified to tropical cyclone status, reaching peak winds of 135 km/h mph on.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Firinga (1989024S11064) Bulletin of the American Meteorological Society 2013-07-30 1989024S11064 https://web.archive.org/web/20160122011413/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989024S11064 2016-01-22 live Around that time, Firinga passed 50 km mi on west of Mauritius, producing 190 km/h mph on wind gusts. Shortly thereafter, the cyclone struck Réunion, still at peak intensity, producing wind gusts as strong as 216 km/h mph on. Firinga turned more to the south as it weakened, degenerating into a tropical disturbance on January 31. It fluctuated in intensity after turning to the southeast and executing a loop to the southwest, dissipating on February 7. On Mauritius, Firinga destroyed 844 homes. Heavy crop damage occurred on the island, and damage nationwide was estimated at $60 million (1989 USD). One person was killed in Mauritius.United Nations Department of Humanitarian Affairs February 1989 Mauritius - Cyclone Firinga Feb 1989 UNDRO Situation Reports 1-3 ReliefWeb 2013-08-03 http://reliefweb.int/report/mauritius/mauritius-cyclone-firinga-feb-1989-undro-situation-reports-1-3 The storm dropped torrential rainfall in the southern portion of Réunion, including 24‑hour totals of 1309 mm in on at Pas de Bellecombe and 1199 mm in on at Casabois, both of which set records for the locations. The rains caused widespread river flooding and resulted in 32 mudslides. Firinga isolated several towns from the flooding and left power and water outages. A total of 2,746 houses were damaged or destroyed, leaving 6,200 people homeless. Damage was estimated at ₣1 billion (1989 francs, $157 million 1989 USD), and there were 10 deaths on the island.Les Risques Naturales á la Réunion Synthése e Des Événements: Firinga, Cyclone Tropical Modéré (29 Janvier 1989) fr 2013-08-01 http://www.risquesnaturels.re/pdf/EVENEMENTS_HISTORIQUES/evenement_historique_Firinga.pdf 2014-12-08 https://web.archive.org/web/20141208095909/http://www.risquesnaturels.re/pdf/EVENEMENTS_HISTORIQUES/evenement_historique_Firinga.pdf deadInventaire des mouvements de terrains et inondations liés au cyclone Fininga (29 janvier 1989) ayant affecté des équipements ou aménagements collectifs et individuels à la Réunion C. Decelle L. Denervaud L. Stieltjes July 1989 Ministere de l'Industrie et de L'Amanagement du Territoire 2013-08-05 http://www.eaureunion.fr/fileadmin/user_upload/Etudes/ETUDE_00604.PDF fr Severe Tropical Storm Gizela SWI February 16 February 22 Gizela Feb 20 1989 0940Z.png Gizela 1989 path.png 52 65 975 A tropical disturbance formed on February 16 to the southeast of Diego Garcia. It moved to the west-southwest, intensifying into Moderate Tropical Storm Gizela on February 18.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Gizela (1989047S13079) Bulletin of the American Meteorological Society 2015-01-16 1989047S13079 https://web.archive.org/web/20151222112526/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989047S13079 2015-12-22 live That day, the JTWC began classifying it as Tropical Cyclone 12S. Due to a passing trough,Global tropical/extratropical cyclone climatic atlas Tropical Depression Gizela, 16–24 February 1996 National Climatic Data Center 2015-01-20 SWI 1989_5 Gizela turned to the south and southeast, gradually strengthening. On February 20, the MFR estimated peak 10‑minute winds of 95 km/h mph on, while the JTWC upgraded it to the equivalent of a minimal hurricane. Influenced by a ridge, Gizela turned back to the southwest and slowly weakened while remaining far away from any landmasses. On February 22, it weakened to tropical depression status while turning to the south, and Gizela dissipated two days later. Tropical Cyclone Leon–Hanitra SWI February 19 (Entered area) March 1 Hanitra 1989-02-23 0900Z.png Leon-Hanitra 1989 path.png 82 125 940 A weak low-pressure area was evident in the Australian basin as early as February 13 between the Cocos Islands and Christmas Island. It meandered for several days, executing a small loop, before beginning a westward motion. After passing south of the Cocos Islands, the system intensified into a tropical storm on February 18 and was named Leon. On the next day, the storm crossed into the south-west Indian Ocean, whereupon the Mauritius Meteorological Service renamed it Hanitra.Australian Bureau of Meteorology 2015-01-17 Tropical Cyclone Leon Perth Tropical Cyclone Warning Centre http://www.bom.gov.au/cyclone/history/pdf/leon89.pdf The storm quickly intensified once it entered the basin.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Hanitra::Leon:Leon_Hanitra (1989044S12102) Bulletin of the American Meteorological Society 2015-01-16 1989044S12102 https://web.archive.org/web/20151222115555/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989044S12102 2015-12-22 live The JTWC, which designated the storm as Tropical Cyclone 11S, upgraded Hanitra to the equivalent of a minimal hurricane late on February 19. On February 22, the agency estimated peak 1‑minute winds of 230 km/h mph on, by which time Hanitra had begun a steady southwest motion. By contrast, the MFR assessed slower strengthening, only upgrading it to tropical cyclone status on February 23 and estimating peak 10‑minute winds of 150 km/h mph on. The storm gradually accelerated to the south and weakened, becoming extratropical over time. The motion shifted to the southeast on February 28, and Hanitra dissipated the next day. Moderate Tropical Storm Iana SWI Iana Feb 26 1989 1021Z.png Iana 1989 path.png February 25 March 1 45 55 985 Before Iana formed, there was a persistent area of cloudiness across the Mozambique Channel in late February. A low pressure area originated over eastern Mozambique and moved eastward over water, emerging near Beira. On February 25, a tropical disturbance formed off the west coast of southern Madagascar and moved east-northeastward, steered by a ridge to the south. Shortly thereafter, the center passed just north of Europa Island. By the next day, it intensified into Moderate Tropical Storm Iana, reaching peak 10‑minute winds of 85 km/h mph on. Late on February 26, the storm made landfall in western Madagascar near Morombe. Iana weakened slightly while moving east-southeastward through the country, emerging into the Indian Ocean on February 27 near Farafangana. On the next day, the storm weakened to tropical depression status as it curved southward. Iana became extratropical the next day.Global tropical/extratropical cyclone climatic atlas Tropical Depression Iana, 25 February-1 March 1996 National Climatic Data Center 2015-01-20 SWI 1989_6Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Iana (1989056S23039) Bulletin of the American Meteorological Society 2015-01-16 1989056S23039 https://web.archive.org/web/20151222140944/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989056S23039 2015-12-22 live The storm was not tracked by the JTWC. On Europa Island, Iana produced 86 km/h mph on wind gusts, while on Madagascar, gusts peaked at 80 km/h mph on at Morondava. Severe Tropical Storm Jinabo SWI March 21 March 31 Jinabo Mar 26 1989 1039Z.png Jinabo 1989 path.png 62 65 966 A tropical disturbance originated just east of St. Brandon on March 23, initially consisting of a disorganized area of convection without a distinct center.Global tropical/extratropical cyclone climatic atlas Tropical Depression Jinabo, 23 March-1 April 1996 National Climatic Data Center 2015-01-20 SWI 1989_9 Moving briskly westward, it slowly organized, becoming Moderate Tropical Storm Jinabo on March 25.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Jinabo:Jinaro (1989080S16066) Bulletin of the American Meteorological Society 2015-01-19 1989080S16066 https://web.archive.org/web/20151222081711/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989080S16066 2015-12-22 live That day, the JTWC classified the system as Tropical Cyclone 19S. The storm turned to the southwest due to a trough in the region, bringing it parallel to the east coast of Madagascar. On March 26, the JTWC upgraded Jinabo to the equivalent of a minimal hurricane, and early the next day, the MFR estimated peak 10‑minute winds of 115 km/h mph on. Around that time, the storm stalled about 110 km mi on east of the coast of Madagascar, later turning to the southeast due to a ridge. Quickly weakening, Jinabo was only a minimal tropical storm by March 29. On the next day, it turned back to the south. Jinabo weakened to tropical depression status on March 31 and dissipated the next day, having become extratropical and joining the westerlies. The storm brought gusty winds and rainfall to Madagascar and Réunion.Earthweek: A Diary Of The Planet 1989-04-02 The Toronto StarLexisNexis On the former island, gusts reached 107 km/h mph on at Mahanoro along the coast. On Réunion, the storm drenched the island for six days, with a peak of 565 mm in on at Sainte-Rose. Tropical Cyclone Krisy SWI March 28 April 11 Krisy Apr 1 1989 0938Z.png Krisy 1989 path.png 82 105 940 About a week after Jinabo formed, another tropical disturbance formed in the basin on March 28 south of Diego Garcia. In its formative stages, it moved erratically, although generally to the southwest. On March 30, it intensified into Moderate Tropical Storm Krisy,Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Krisy (1989087S11073) Bulletin of the American Meteorological Society 2015-01-19 1989087S11073 https://web.archive.org/web/20151222133426/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989087S11073 2015-12-22 live the same day that the JTWC classified it as Tropical Cyclone 21S. Due to a ridge to the south,Global tropical/extratropical cyclone climatic atlas Tropical Cyclone Krisy, 28 March-11 April 1996 National Climatic Data Center 2015-01-20 SWI 1989_10 Krisy's track shifted to the west that day before turning southward on April 1. During that time, the JTWC assessed that Krisy intensified to the equivalent of a minimal hurricane. The MFR upgraded the storm to cyclone status on April 2, and on that day the JTWC estimated peak 1‑minute winds of 195 km/h mph on. On April 3, the MFR estimated peak 10‑minute winds of 150 km/h mph on as the cyclone turned to the west-southwest. Over the next few days, the storm slowly weakened, passing 100 km mi on north of Rodrigues on April 5 as a moderate tropical storm. On the next day, Krisy brushed the east coasts of Mauritius and Réunion, passing just 30 km mi on east of the former island.2015-01-19 The President's Report 1988 Mauritius Chamber of Agriculture https://books.google.com/books?id=CogwAQAAIAAJ&q=cyclone+krissy+mauritius It weakened to tropical depression status on April 7 while curving to the south and later to the east, becoming extratropical. A ridge turned the remnants of Krisy to the north toward Tropical Depression Lezissy, and the two systems merged on April 11. Krisy first affected Rodrigues, producing 122 km/h mph on gusts and 97.6 mm (3.84 mm) of rainfall. Gusts reached 90 km/h mph on on Réunion, and high waves affected the island for several days. However, effects were worst on Mauritius. While passing south of the island, Krisy produced wind gusts of 155 km/h mph on at Plaisance Airport on Mauritius.Annual Report of the Forestry Service The President's Report 2015-01-19 Ministry of Agriculture, Fisheries, and Natural Resources 1989 https://books.google.com/books?id=qNkPAQAAIAAJ&q=cyclone+krissy+mauritius Rainfall on the island reached 182 mm in on over a 24 period. On the island, the passages of Firinga and Krisy decreased the output of the sugar crop by 20,000 tons,Country Report: Madagascar, Mauritius, Seychelles, Comoros 2015-01-19 1989 23 https://books.google.com/books?id=d900AQAAIAAJ&q=Cyclone+Krissy accounting for 15% of the sugar cane, mostly in the southeastern portion of the island. Several other crops were affected by the two cyclones, resulting in a 50% decrease of the banana output.August 1989 Agricultural Production Central Statistics Office 2015-01-19 http://statsmauritius.govmu.org/English/StatsbySubj/Documents/archive%20esi/ESI%200094/ESI_0094_0002.pdf As Krisy struck just two months after Firinga, residents heeded alerts and were well-prepared, and 800 people sought shelter. There were no direct deaths, although one farmer committed suicide due to the threat of the storm.Lîle de La Réunion sous l'œil du cyclone au XXéme siécle fr Isabelle Mayer Jouanjean Université de la Réunion 2011 https://tel.archives-ouvertes.fr/tel-00780487/document PDF Moderate Tropical Storm Lezissy SWI April 4 April 11 Lezissy Apr 6 1989 0847Z.png Lezissy 1989 path.png 45 45 985 The final storm of the season formed on April 6 to the east-southeast of Diego Garcia while Krisy was active near Rodrigues.Global tropical/extratropical cyclone climatic atlas Tropical Depression Lezissy, 4–11 April 1996 National Climatic Data Center 2015-01-20 SWI 1989_11 That same day, the JTWC classified it as Tropical Cyclone 24S. It quickly intensified into Moderate Tropical Storm Lezissy as it took a westward trajectory, reaching peak winds of 85 km/h mph on by late on April 6.Kenneth R. Knapp Michael C. Kruk David H. Levinson Howard J. Diamond Charles J. Neumann 2010 The International Best Track Archive for Climate Stewardship (IBTrACS): Unifying tropical cyclone best track data 1989 Lezissy (1989094S05086) Bulletin of the American Meteorological Society 2015-01-19 1989094S05086 https://web.archive.org/web/20160121232658/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1989094S05086 2016-01-21 live Influenced by a broad area of low pressure, Lezissy turned to the southwest, gradually weakening. It approached former Cyclone Krisy, and the two systems merged by April 11, both losing their circulations and leaving behind a disorganized remnant low. See also Tropical cyclones List of Southern Hemisphere tropical cyclone seasons Atlantic hurricane seasons: 1988, 1989 Pacific hurricane seasons: 1988, 1989 Pacific typhoon seasons: 1988, 1989 North Indian Ocean cyclone seasons: 1988, 1989 References 2 1988 y 1980 South-West Indian Ocean cyclone yes Category:South-West Indian Ocean cyclone seasons Category:Articles which contain graphical timelines