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The 1992–93 South-West Indian Ocean cyclone season lasted longer than normal, with the first storm Aviona forming on September 27 and the final storm Konita not dissipating until May 7. It was an above-average season, with four tropical cyclones – the equivalent of a minimal hurricane – along with six tropical storms, one subtropical depression, and several depressions including one that was named. The basin is defined as the area west of 90°E and south of the Equator in the Indian Ocean, which includes the waters around Madagascar westward to the east coast of Africa. Tropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion (MFR), as well as by the Joint Typhoon Warning Center (JTWC). At the time, the season officially went from November 15, 1991 to April 30, 1992, although this season began in September with the formation of Tropical Storm Aviona in the northeastern portion of the basin. A month later, Tropical Storm Babie also formed in the northeastern portion of the basin before the season's official start. After several depressions formed in December and early January, Cyclone Colina formed and struck Réunion, which damaged houses and killed 2 people and left 12 missing there. Three storms were active at the same time in the middle of January, including Colina – Tropical Storm Dessilia moved across Madagascar with gusty winds, and Cyclone Edwina was the longest-lasting and strongest storm of the season. Edwina brushed the Mascarene Islands with gusty winds and light rainfall. In mid-February, Tropical Storm Finella brought locally heavy rainfall to Réunion, reaching along the island's east coast and causing minimal rainfall along the southern coast. The Intertropical Convergence Zone (ITCZ) became active toward the end of February, spawning tropical storms Gracia and Ionia as well as Tropical Depression Hutelle. Ionia, the last of five system to cross Madagascar during the season, killed eight people in the country. The season ended with Cyclone Jourdanne, which was the second-strongest storm of the season in April, and Cyclone Konita in May. ==Seasonal summary== ImageSize = width:1000 height:200 PlotArea = top:10 bottom:80 right:20 left:20 Legend = columns:3 left:30 top:58 columnwidth:270 AlignBars = early DateFormat = dd/mm/yyyy Period = from:01/09/1992 till:01/06/1993 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/10/1992 Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression id:TS value:rgb(0,0.98,0.96) legend:Moderate_Tropical_Storm id:ST value:rgb(0.80,1,1) legend:Severe_Tropical_Storm id:TC value:rgb(1,1,0.80) legend:Tropical_Cyclone id:IT value:rgb(1,0.76,0.25) legend:Intense_Tropical_Cyclone id:VI value:rgb(1,0.38,0.38) legend:Very_Intense_Tropical_Cyclone Backgroundcolors = canvas:canvas BarData = barset:Hurricane bar:Month PlotData= barset:Hurricane width:11 align:left fontsize:S shift:(4,-4) anchor:till from:27/09/1992 till:05/10/1992 color:TS text:"Aviona (MTS)" from:18/10/1992 till:21/10/1992 color:TS text:"Babie (MTS)" from:04/12/1992 till:10/12/1992 color:TD text:"C1 (TD)" from:26/12/1992 till:30/12/1992 color:TD text:"C3 (SD)" from:13/01/1993 till:20/01/1993 color:TC text:"Colina (TC)" from:16/01/1993 till:24/01/1993 color:ST text:"Dessilia (STS)" from:19/01/1993 till:29/01/1993 color:IT text:"Edwina (ITC)" barset:break from:13/02/1993 till:15/02/1993 color:TS text:"Finella (MTS)" from:20/02/1993 till:23/02/1993 color:TS text:"Gracia (MTS)" from:26/02/1993 till:28/02/1993 color:TD text:"H1 (TD)" from:27/02/1993 till:02/03/1993 color:TD text:"Hutelle (TD)" from:02/03/1993 till:09/03/1993 color:TS text:"Ionia (MTS)" from:02/04/1993 till:10/04/1993 color:IT text:"Jourdanne (ITC)" from:02/05/1993 till:07/05/1993 color:TC text:"Konita (TC)" bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/09/1992 till:01/10/1992 text:September from:01/10/1992 till:01/11/1992 text:October from:01/11/1992 till:01/12/1992 text:November from:01/12/1992 till:01/01/1993 text:December from:01/01/1993 till:01/02/1993 text:January from:01/02/1993 till:01/03/1993 text:February from:01/03/1993 till:01/04/1993 text:March from:01/04/1993 till:01/05/1993 text:April from:01/05/1993 till:01/06/1993 text:May TextData = pos:(569,23) text:"(For further details, please see" pos:(713,23) text:"scales)" During the season, the Météo-France office (MFR) on Réunion island issued warnings in tropical cyclones within the basin. 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. 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 storms in the season lasted about five days on average, although Cyclone Edwina lasted the longest at 11 days. Storms formed throughout the basin and were fairly evenly distributed throughout the season, with the exception of a lull in November. Most storms originated from the Intertropical Convergence Zone (ITCZ). MFR named storms throughout the season using 11 names from a sequential list.〔 The remainder of the list was Laura, Monette, Neige, Octavie, Pamela, Rosita, Stella, Tasiana, Vigonia, Wendy, and Yolande. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1992–93 South-West Indian Ocean cyclone season」の詳細全文を読む スポンサード リンク
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