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The 1990 Pacific hurricane season saw a then-record 16 hurricanes form.〔 Throughout the year, 21 tropical cyclones became named storms in the eastern Pacific Ocean. Hurricane Alma formed on May 12, 1990, three days before the season's official start on May 15. The Central Pacific hurricane season began on June 1, covering tropical cyclone formation in the region between 140°W and International Dateline. Hurricane Trudy was the last storm to dissipate, doing so on November 1, nearly a month before the Pacific hurricane season officially ended on November 30. The season produced twenty-seven tropical depressions, of which twenty-one became named storms, and sixteen strengthened into hurricanes. Six out of the sixteen hurricanes strengthened into major hurricanes. Despite high levels of activity, Rachel was the only system to make landfall, bringing floods to Northwestern Mexico and the Southwestern United States.〔 Thousands were left homeless, and there were 18 confirmed fatalities. Additionally, the remnants of Hurricane Boris brought light showers to California. At that time, Hurricane Hernan was the strongest Pacific hurricane to have its intensity estimated via satellite imagery; this record was matched by Hurricane Trudy months later. One tropical storm formed in the Central Pacific Hurricane Center's warning zone and eventually crossed the International Dateline before dissipating.〔 This timeline includes information that was not operationally released, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not operationally warned upon, has been included. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, and dissipations during the season. ==Timeline of events== 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:01/05/1990 till:30/11/1990 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/05/1990 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_(118–153_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:10 align:left fontsize:S shift:(4,-4) anchor:till from:12/05/1990 till:18/05/1990 color:C1 text:"Alma (C1)" from:02/06/1990 till:08/06/1990 color:C1 text:"Boris (C1)" from:08/06/1990 till:16/06/1990 color:TS text:"Cristina (TS)" from:19/06/1990 till:23/06/1990 color:TS text:"Douglas (TS)" from:26/06/1990 till:02/07/1990 color:C1 text:"Elida (C1)" from:29/06/1990 till:04/07/1990 color:TD text:"Six-E (TD)" from:06/07/1990 till:12/07/1990 color:C1 text:"Fausto (C1)" barset:break from:10/07/1990 till:18/07/1990 color:C2 text:"Genevieve (C2)" from:19/07/1990 till:31/07/1990 color:C4 text:"Hernan (C4)" from:20/07/1990 till:30/07/1990 color:C3 text:"Iselle (C3)" from:24/07/1990 till:26/07/1990 color:TD text:"Eleven-E (TD)" from:07/08/1990 till:15/08/1990 color:TS text:"Aka (TS)" from:08/08/1990 till:09/08/1990 color:TD text:"Diana (TD)" from:10/08/1990 till:13/08/1990 color:TD text:"Two-C (TD)" barset:break from:17/08/1990 till:19/08/1990 color:TD text:"Twelve-E (TD)" from:17/08/1990 till:24/08/1990 color:C3 text:"Julio (C3)" from:21/08/1990 till:30/08/1990 color:C1 text:"Kenna (C1)" from:23/08/1990 till:01/09/1990 color:C1 text:"Lowell (C1)" from:07/09/1990 till:21/09/1990 color:C4 text:"Marie (C4)" from:10/09/1990 till:19/09/1990 color:C1 text:"Norbert (C1)" from:11/09/1990 till:12/09/1990 color:TD text:"Eighteen-E (TD)" barset:break from:23/09/1990 till:02/10/1990 color:C4 text:"Odile (C4)" from:28/09/1990 till:01/10/1990 color:C1 text:"Polo (C1)" from:27/09/1990 till:03/10/1990 color:TS text:"Rachel (TS)" from:09/10/1990 till:14/10/1990 color:TS text:"Simon (TS)" from:16/10/1990 till:01/11/1990 color:C4 text:"Trudy (C4)" from:21/10/1990 till:31/10/1990 color:C2 text:"Vance (C2)" barset:skip bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/05/1990 till:31/05/1990 text:May from:01/06/1990 till:30/06/1990 text:June from:01/07/1990 till:31/07/1990 text:July from:01/08/1990 till:31/08/1990 text:August from:01/09/1990 till:30/09/1990 text:September from:01/10/1990 till:31/10/1990 text:October from:01/11/1990 till:30/11/1990 text:November TextData = pos:(570,30) text:"(From the" pos:(617,30) text:"Saffir–Simpson hurricane wind 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「Timeline of the 1990 Pacific hurricane season」の詳細全文を読む スポンサード リンク
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