|
The 1975 Pacific hurricane season officially started May 15, 1975 in the eastern Pacific, and June 1, 1975 in the central Pacific, and lasted until November 30, 1975. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeast Pacific Ocean. The 1975 Pacific hurricane season was near average, with 17 tropical storms forming. Of these, 9 became hurricanes, and 4 became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale. The only notable storms are Hurricane Olivia, which killed 30 people, caused $30 million (1975 USD) in damage, and left thousands homeless when it made landfall in October; and an unnamed hurricane that developed at very high latitude, but had no effect on land. Hurricane Denise was the strongest storm of the year. Hurricanes Lily and Katrina passed close to Socorro Island and Tropical Storm Eleanor made landfall in Mexico. Hurricane Agatha sank a ship. ==Season summary== The season began with the formation of Tropical Depression One on June 2 and ended with the extratropical transition of Tropical Storm Priscilla on November 7. No named systems formed in May, two in June, four in July, six in August, three in September, one in October, and one in November. The total length of the season, from the formation of the first depression to the dissipation of the last, was 158 days. In the eastern Pacific proper (east of 140°W), sixteen tropical storms and eight hurricanes formed. Four of the hurricanes became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale.〔 These numbers are close to the long-term averages of fifteen tropical storms, nine hurricanes, and four major hurricanes. There were also four unnamed tropical depressions.〔 The only system to enter or form in the central Pacific (between 140°W and the international dateline) was an unusual high-latitude hurricane.〔(【引用サイトリンク】publisher=Central Pacific Hurricane Center )〕 The only systems to make landfall this year were Tropical Storm Eleanor and Hurricane Olivia. Besides these two systems, Hurricane Agatha caused the sinking of a ship carrying millions of dollars worth of cargo. Tropical Storm Eleanor caused no serious impact. The most devastating storm of the season was Hurricane Olivia. A late-season major hurricane, Olivia came ashore near Mazatlán.〔 The storm killed 30 people, left around 30,000 people homeless, and caused 20 million dollars (1975 USD) in damage.〔 ImageSize = width:800 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:01/06/1975 till:01/12/1975 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/06/1975 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:02/06/1975 till:05/06/1975 color:C1 text:"Agatha" from:28/06/1975 till:03/07/1975 color:TS text:"Bridget" from:02/07/1975 till:11/07/1975 color:C3 text:"Carlotta" from:05/07/1975 till:15/07/1975 color:C4 text:"Denise" from:10/07/1975 till:12/07/1975 color:TS text:"Eleanor" from:27/07/1975 till:30/07/1975 color:TS text:"Francene" barset:break from:11/08/1975 till:14/08/1975 color:TS text:"Georgette" from:13/08/1975 till:17/08/1975 color:TS text:"Hilary" from:18/08/1975 till:26/08/1975 color:C2 text:"Ilsa" from:24/08/1975 till:31/08/1975 color:C1 text:"Jewel" from:29/08/1975 till:07/09/1975 color:C4 text:"Katrina" from:31/08/1975 till:05/09/1975 color:C1 text:"Twelve" barset:break from:16/09/1975 till:21/09/1975 color:C1 text:"Lily" from:28/09/1975 till:02/10/1975 color:TS text:"Monica" from:28/09/1975 till:04/10/1975 color:TS text:"Nanette" from:22/10/1975 till:25/10/1975 color:C3 text:"Olivia from:02/11/1975 till:07/11/1975 color:TS text:"Priscilla" bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/06/1975 till:01/07/1975 text:June from:01/07/1975 till:01/08/1975 text:July from:01/08/1975 till:01/09/1975 text:August from:01/09/1975 till:01/10/1975 text:September from:01/10/1975 till:01/11/1975 text:October from:01/11/1975 till:01/12/1975 text:November 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「1975 Pacific hurricane season」の詳細全文を読む スポンサード リンク
|