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The 2009 North Indian Ocean cyclone season was an event in the annual cycle of tropical cyclone formation. The North Indian Ocean cyclone season has no official bounds, but cyclones tend to form between April and December, with peaks in May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northern Indian Ocean. The scope of this article is limited to the Indian Ocean in the Northern Hemisphere, east of the Horn of Africa and west of the Malay Peninsula. There are two main seas in the North Indian Ocean — the Arabian Sea to the west of the Indian subcontinent, abbreviated ''ARB'' by the India Meteorological Department (IMD); and the Bay of Bengal to the east, abbreviated ''BOB'' by the IMD. The official Regional Specialized Meteorological Centre in this basin is the India Meteorological Department (IMD), while the Joint Typhoon Warning Center releases unofficial advisories. The tropical cyclone scale for this basin is detailed on the right. On average, 4 to 6 storms form in this basin every season. ==Seasonal summary== ImageSize = width:985 height:180 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:01/04/2009 till:01/01/2010 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/04/2009 Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0.38,0.73,1) legend:Depression/Deep_Depression id:TS value:rgb(0,0.98,0.96) legend:Cyclonic_Storm id:ST value:rgb(0.80,1,1) legend:Severe_Cyclonic_Storm id:VS value:rgb(1,0.76,0.25) legend:Very_Severe_Cyclonic_Storm id:ES value:rgb(1,0.56,0.13) legend:Extremely_Severe_Cyclonic_Storm id:SU value:rgb(1,0.38,0.38) legend:Super_Cyclonic_Storm Backgroundcolors = canvas:canvas BarData = barset:Hurricane bar:Month PlotData= barset:Hurricane width:10 align:left fontsize:S shift:(4,-4) anchor:till from:14/04/2009 till:17/04/2009 color:TS text:Bijli from:23/05/2009 till:26/05/2009 color:ST text:Aila from:23/06/2009 till:26/06/2009 color:TD text:ARB 01 barset:break from:25/06/2009 till:26/06/2009 color:TD text:ARB 02 from:20/07/2009 till:21/07/2009 color:TD text:BOB 03 from:03/09/2009 till:06/09/2009 color:TD text:BOB 04 barset:break from:04/11/2009 till:11/11/2009 color:TS text:Phyan from:10/12/2009 till:16/12/2009 color:TS text:Ward bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/04/2009 till:01/05/2009 text:April from:01/05/2009 till:01/06/2009 text:May from:01/06/2009 till:01/07/2009 text:June from:01/07/2009 till:01/08/2009 text:July from:01/08/2009 till:01/09/2009 text:August from:01/09/2009 till:01/10/2009 text:September from:01/10/2009 till:01/11/2009 text:October from:01/11/2009 till:30/11/2009 text:November from:01/12/2009 till:01/01/2010 text:December 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「2009 North 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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