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The 1978 Pacific hurricane season officially began May 15, 1978, in the eastern Pacific, June 1, 1978 in the central Pacific, and officially ended 30 November 1978. These dates conventionally delimit the period of time when tropical cyclones form in the eastern north Pacific Ocean. Activity this year was slightly above average, with eighteen named storms forming. Five of those were tropical storms, thirteen were hurricanes, and six were major hurricanes that reached Category 3 or higher on the Saffir-Simpson Hurricane Scale. In the Central Pacific, a tropical depression and a major hurricane formed. Also, this season is the third most active season within the basin when counting on ACE Index, as the season had an index of 207. Atlantic Hurricane Greta crossed into the basin and was renamed Olivia. ==Storms== ImageSize = width:800 height:225 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:01/05/1978 till:01/11/1978 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/05/1978 Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression_=_<39_mph_(0–62_km/h) id:TS value:rgb(0,0.98,0.96) legend:Tropical_Storm_=_39–73_mph_(63–117 km/h) id:C1 value:rgb(1,1,0.80) legend:Category_1_=_74–95_mph_(119–153_km/h) id:C2 value:rgb(1,0.91,0.46) legend:Category_2_=_96–110_mph_(154–177_km/h) id:C3 value:rgb(1,0.76,0.25) legend:Category_3_=_111–130_mph_(178–209-km/h) id:C4 value:rgb(1,0.56,0.13) legend:Category_4_=_131–155_mph_(210–249_km/h) id:C5 value:rgb(1,0.38,0.38) legend:Category_5_=_>=156_mph_(>=250_km/h) Backgroundcolors = canvas:canvas BarData = barset:Hurricane bar:Month PlotData= barset:Hurricane width:11 align:left fontsize:S shift:(4,-4) anchor:till from:30/05/1978 till:31/05/1978 color:C1 text:"Aletta" from:17/06/1978 till:20/06/1978 color:TS text:"Bud" from:17/06/1978 till:25/06/1978 color:C4 text:"Carlotta" from:26/06/1978 till:03/07/1978 color:C3 text:"Daniel" from:30/06/1978 till:02/07/1978 color:TD text:"Five" from:06/07/1978 till:10/07/1978 color:TS text:"Emilia" from:09/07/1978 till:28/07/1978 color:C4 text:"Fico" from:13/07/1978 till:20/07/1978 color:C3 text:"Gilma" from:22/07/1978 till:29/07/1978 color:C4 text:"Hector" barset:break from:07/08/1978 till:09/08/1978 color:TD text:"10A" from:08/08/1978 till:08/08/1978 color:TD text:"Ten" from:11/08/1978 till:15/08/1978 color:C1 text:"Iva" from:18/08/1978 till:31/08/1978 color:C2 text:"John" from:18/08/1978 till:28/08/1978 color:C2 text:"Kristy" from:19/08/1978 till:21/08/1978 color:TS text:"Lane" from:23/08/1978 till:01/09/1978 color:C1 text:"Miriam" from:30/08/1978 till:09/09/1978 color:C4 text:"Norman" from:08/09/1978 till:09/09/1978 color:TD text:"Seventeen" barset:break from:20/09/1978 till:23/09/1978 color:C1 text:"Olivia" from:23/09/1978 till:26/09/1978 color:TS text:"Paul" from:02/10/1978 till:07/10/1978 color:C1 text:"Rosa" from:18/10/1978 till:24/10/1978 color:C4 text:"Susan" from:18/10/1978 till:20/10/1978 color:TS text:"Sergio" bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/05/1978 till:01/06/1978 text:May from:01/06/1978 till:01/07/1978 text:June from:01/07/1978 till:01/08/1978 text:July from:01/08/1978 till:01/09/1978 text:August from:01/09/1978 till:01/10/1978 text:September from:01/10/1978 till:01/11/1978 text:October TextData = pos:(570,30) text:"(From the" pos:(617,30) text:"Saffir–Simpson Hurricane Scale)" 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「1978 Pacific hurricane season」の詳細全文を読む スポンサード リンク
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