1980–81 South-West Indian Ocean cyclone season

Cyclone season in the Southwest Indian Ocean January 2018 April 2013 SWI 1981 1980-1981 South-West Indian Ocean cyclone season summary.jpg November 8, 1980 May 4, 1981 Florine 935 122 10 12 12 3 2 1978–79, 1979–80, 1980–81, 1981–82, 1982–83 1980–81 Australian region cyclone season 1980–81 South Pacific cyclone season The 1980–81 South-West Indian Ocean cyclone season was an average cyclone season. Season summary Systems Tropical Cyclone Alice–Adelaide SWI Alice-Adelaide 1980 track.png November 10 (Entered basin) November 14 65 55 On November 3, a low-pressure area developed off the southwest coast of Sumatra in the Australian basin. The BoM upgraded the low to Tropical Cyclone Alice two days later, which was intensifying while moving west-southwestward, steered by the subtropical ridge to its south. Alice attained a peak intensity of 180 km/h mph on in the Australian basin on November 7. While in the region, the cyclone's high waves capsized two boats. The crew of the Sing Long No. 21 escaped in two life rafts; a freighter rescued one raft, but the other was lost, with 12 crew members aboard.Tropical Cyclone Alice Australian Bureau of Meteorology November 9, 2018 http://www.bom.gov.au/cyclone/history/alice.shtml Cyclone Alice crossed 90º E on November 9, and 85º E a day later, whereupon the MMS renamed the storm as Adelaide,http://madarevues.recherches.gov.mg/IMG/pdf/2128.pdf La Saison Cyclonique 1980-1981 A Madagascar La Météorlogie, Service de la Réunion 137–139 Madagascar: Revue de Géographie November 9, 2018 fr PDF 39 Juil-Déc 1981 estimating winds of at least 120 km/h mph on. The JTWC estimated maximum sustained winds of 205 km/h mph on at that time. Adelaide soon began a weakening trend, falling below tropical cyclone status on November 11. A day later, the storm turned to the west-northwest, steered by a ridge to the south. Adelaide weakened to a tropical depression on November 13, and was no longer classifiable a tropical cyclone by a day later.Météo-France Donnes de Bemany http://www.meteo.fr:80/temps/domtom/La_Reunion/base_cyclone/nom_annee/ADELAIDE_1980.html November 9, 2018 dead https://web.archive.org/web/20050130042127/http://www.meteo.fr/temps/domtom/La_Reunion/base_cyclone/nom_annee/ADELAIDE_1980.html January 30, 2005 mdy-all 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 1980 Adelaide (1980308S05102) Bulletin of the American Meteorological Society November 9, 2018 1980308S05102 https://web.archive.org/web/20181110040540/http://www.atms.unca.edu/ibtracs/ibtracs_current/browse-ibtracs/index.php?name=v03r09-1980308S05102 November 10, 2018 liveGlobal tropical/extratropical cyclone climatic atlas Tropical Cyclone Adelaide, 9–14 November 1996 National Climatic Data Center November 9, 2018 SWI 1986_8 Moderate Tropical Storm Bettina SWI Bettina Dec 1 1980 0433Z.png Bettina 1980 track.png November 22 December 1 45 50 Bettina formed on November 22, over the central Indian Ocean. It moved south-southwestward and reached a peak intensity of 50 kn mph km/h on November 26. It made landfall as a tropical storm over Mozambique and weakened shortly after on December 1. Tropical Cyclone Bert–Christelle SWI Christe Nov 29 1980 0154Z.png Bert-Christelle 1981 track.png December 3 (Entered basin) December 9 75 80 965 Formed on November 24 over the open Indian Ocean it moved in a mostly southwest direction, though it did curve a few times. It reached a peak intensity of 80 kn mph km/h and a pressure of 965 hPa inHg 4 on November 29. Christelle made landfall on Madagascar on December 9 as a tropical depression. Moderate Tropical Storm Diana SWI Diana 1980 track.png December 17 December 19 35 35 Diana existed from December 17 to December 19. Moderate Tropical Storm Edwige SWI Edwige Dec 31 1980 0328Z.png Edwige 1980 track.png December 28 January 1 35 35 Edwige brushed Madagascar. Very Intense Tropical Cyclone Florine SWI Florine Jan 7 1981 0409Z.png Florine 1981 track.png January 3 January 11 120 105 935 Toward the beginning of January, the ITCZ was active to the northeast of Madagascar, spawning a circulation east of Agalega that became a depression on January 3. On the next day, the system was named Florine. Steered between a ridge to its northwest and northeast, the system moved erratically until January 5, when Florine began a steady movement to the south and later southwest. The change in trajectory was because the ridge to Florine's northeast had weakened. On January 6, the intensifying storm passed just west of St. Brandon, where a station recorded sustained winds of 115 km/h mph on and gusts of 148 km/h mph on. A day later, the outer eyewall of Florine moved across Réunion island, while the center of the eye passed 25 km east of Sainte-Rose. Roland Garros Airport recorded a minimum pressure of 935 mbar inHg on, the lowest on the island. A landfall was spared due to a shift in trajectory to the south-southeast caused by a passing cold front.Global tropical/extratropical cyclone climatic atlas Tropical Cyclone Florine 4–10 January 1996 National Climatic Data Center 2016-11-20 SWI 1981_1 Also around this time, the cyclone reached its peak intensity according to the JTWC; the agency estimated peak winds of 195 km/h mph on, based on a Dvorak rating of 5.5.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 1981 Florine (1981003S11059) Bulletin of the American Meteorological Society 2016-11-20 1981003S11059 https://web.archive.org/web/20160707135118/http://atms.unca.edu/ibtracs/ibtracs_v03r04/browse-ibtracs/index.php?name=v03r04-1981003S11059 July 7, 2016 liveForecast Verification and Reconnaissance Data for Southern Hemisphere Tropical Cyclones (July 1980 through June 1982) Joint Typhoon Warning Center John W. Diercks Robert C. Weir Mary K. Kopper November 20, 2016 Tech Note 82-1 https://apps.dtic.mil/sti/pdfs/ADA130187.pdf https://web.archive.org/web/20160304052100/http://www.dtic.mil/get-tr-doc/pdf?AD=ADA130187 live March 4, 2016 PDF The MFR estimated peak 10 minute winds of 220 km/h mph on. Florine weakened as it accelerated ahead of a polar trough, and was no classifiable as a tropical cyclone on January 10. The remnants passed west of Île Amsterdam on the next day and continued southeastward. Florine's close passage to Réunion caused injuries to two people. The high winds, peaking at 234 km/h mph on at Plaine des Cafres, affected the island alongside heavy rainfall. Precipitation totals ranged from 100 mm in on near the coast to 1161 mm in on at Foc-Foc. High tides reached 5.2 m ft on at the coast in La Possession. Cyclone Florine destroyed crops and 95 houses. It caused injuries to two people and left around 500 people homeless. The storm knocked down 2000 phone lines and caused disruptions to the power network. Cilaos and Salazie became isolated during the storm, requiring assistance by helicopter. In nearby Mauritius, winds peaked at 137 km/h mph on. Moderate Tropical Storm Gaelle SWI Gaelle Jan 16 1981 0225Z.png Gaelle 1981 track.png January 14 January 18 40 45 Gaelle existed from January 14 to January 18. Moderate Tropical Storm Helyette SWI Helyette Feb 3 1981 0407Z.png Helyette 1981 track.png January 28 February 6 40 45 On January 31, Tropical Depression Helyette passed north of Rodrigues, and the next day moved over Mauritius and just southeast of Réunion. The highest wind gust was 121 km/h mph on at Fort William on Mauritius. Helyette made landfall in Madagascar.Global tropical/extratropical cyclone climatic atlas Tropical Cyclone Helyette, 28 January-4 February 1996 National Climatic Data Center February 2, 2019 SWI 1981_3 Severe Tropical Storm Iadine SWI Iadine Feb 20 1981 0425Z.png Iadine 1981 track.png February 16 February 25 50 55 Iadine also made landfall in Madagascar. Severe Tropical Storm Johanne SWI TC Johanne 1981.jpg Johanne 1981 track.png March 1 March 11 60 80 Johanne existed from March 1 to March 11. On March 6, Tropical Storm Johanne passed between Réunion and Mauritius while passing southeastward, with respective island rainfall totals of 316 and 260 mm in on. The highest wind gust was 124 km/h mph on at Mon Desert Alma on Mauritius.Global tropical/extratropical cyclone climatic atlas Tropical Depression Johanne, 1–10 March 1996 National Climatic Data Center February 2, 2019 SWI 1981_5 Moderate Tropical Storm Klara SWI MTS Klara 1981.jpg Klara 1981 track.png March 28 April 8 40 40 Klara existed from March 28 to April 8. Moderate Tropical Storm Lisa SWI MTS Lisa 1981.jpg Lisa 1981 track.png April 6 April 16 40 40 Lisa existed from April 6 to April 16. For several days, Lisa looped to the north of the Mascarene Islands, coming within 200 km mi on of Mauritius on April 9. For several the storm dropped rainfall on the islands, reaching 398 mm in on in Mauritius and 445 mm in on on Réunion. Flooding caused road damage in the latter island.Global tropical/extratropical cyclone climatic atlas Tropical Depression Lisa, 6–14 April 1996 National Climatic Data Center February 2, 2019 SWI 1981_8 See also Atlantic hurricane seasons: 1980, 1981 Eastern Pacific hurricane seasons: 1980, 1981 Western Pacific typhoon seasons: 1980, 1981 North Indian Ocean cyclone seasons: 1980, 1981 References 1980 South-West Indian Ocean cyclone yes 1980 y Category:South-West Indian Ocean cyclone seasons Category:1980–81 Southern Hemisphere tropical cyclone season Category:Tropical cyclones in 1980 Category:Tropical cyclones in 1981