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The 1986 Pacific hurricane season saw several tropical cyclones bring significant flooding to the Central United States. The hurricane season officially started May 15, 1986 in the eastern Pacific, and June 1, 1986 in the central Pacific, and lasted until November 30, 1986 in both regions. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean. A total of 17 named storms and 9 hurricanes developed during the season; this is slightly above the averages of 15 named storms and 8 hurricanes, respectively. In addition, 25 tropical depressions formed in the eastern Pacific during 1986, which, at the time, was the second most ever recorded; only the 1982 Pacific hurricane season saw a higher total. Several storms throughout the season affected land. Hurricane Estelle passed south of Hawaii, resulting in $2 million in damage and two deaths. Hurricanes Newton, Paine and Roslyn each struck Northwestern Mexico. While damage was minimal from these three systems near their location of landfall, Paine brought considerable flooding to the Great Plains. The overall flooding event resulted in $350 million in damage, with the worst effects being recorded in Oklahoma. Hurricane Roslyn was the strongest storm of the season, attaining peak winds of 145 mph (230 km/h).〔 ==Seasonal summary== Activity in the Eastern Pacific Hurricane Center's (EPHC) area of responsibility was above average. There were 25 tropical depressions, one short of the record set in 1982, which had 26.〔 Only one storm formed in the Central Pacific Hurricane Center's (CPHC) area of responsibility, Tropical Depression One-C. Six other cyclones entered the CPHC area of responsibility from the EPHC area of responsibility.〔 In all, 17 systems formed, which is two storms above normal. In addition, 9 hurricanes were reported during the season, one more than average. An average number (3) of major hurricanes – Category 3 or higher on the Saffir-Simpson hurricane wind scale – was also reported. The season began with the formation of Hurricane Agatha on May 22 and ended with the dissipation of Tropical Depression Twenty Five on October 25, spanning 147 days. Although it was nearly two weeks shorter than the 1985 Pacific hurricane season, the season was six days longer than average. The EPHC issued 406 tropical cyclone advisories, which were issued four times a day at 0000, 0600, 1200, and 1800 UTC. In 1986, Hurricane Hunters flew into three storms; Newton, Roslyn, and Estelle.〔〔 In Newton, the National Oceanic and Atmospheric Administration (NOAA) conducted environmental research in the cyclone. In addition, the National Weather Service Field Service Station provided the East Pacific with excellent satellite coverage.〔 During the months of May and June, four named systems developed. In July, one tropical storm and two hurricanes formed. The following month, five tropical systems developed. Towards the end of the season, tropical cyclone activity declined somewhat. While five storms formed in September, only one formed in October and none during the month of November. A moderate El Nino was present throughout the season; water temperatures across the equatorial Central Pacific were 1.3 °C (3 °F) above normal.〔(【引用サイトリンク】title=Historical El Nino/La Nina episodes (1950–present) )〕 In addition, the Pacific Decadal Oscillation (PDO) was in a warm phase during this time period. Three tropical cyclones made landfall in 1986. The first, Hurricane Newton made landfall near Cabo San Lucas,〔 bringing minor damage.〔〔 Another storm, Hurricane Paine brushed Cabo San Lucas, and later moved inland over Sonora. Paine caused minimal impacts at landfall, but its remnants were described as one of the worst floods in Oklahoma history.〔 Flooding affected 52 counties in Oklahoma, which resulted in a total of $350 million in damage.〔 The final storm to make landfall during the hurricane season was Hurricane Roslyn.〔 The hurricane produced some flooding, but no serious damage. In addition, Hurricane Estelle came close enough to Hawaii to require a hurricane watch.〔 Two drownings were reported, and the total damage was around $2 million.〔 ImageSize = width:815 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:01/05/2013 till:01/12/2013 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/05/2013 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)_(TD) id:TS value:rgb(0,0.98,0.96) legend:Tropical_Storm_=_39–73_mph_(63–117 km/h)_(TS) id:C1 value:rgb(1,1,0.80) legend:Category_1_=_74–95_mph_(118–153_km/h)_(C1) id:C2 value:rgb(1,0.91,0.46) legend:Category_2_=_96–110_mph_(154–177_km/h)_(C2) id:C3 value:rgb(1,0.76,0.25) legend:Category_3_=_111–129_mph_(178–208_km/h)_(C3) id:C4 value:rgb(1,0.56,0.13) legend:Category_4_=_130–156_mph_(209–251_km/h)_(C4) id:C5 value:rgb(1,0.38,0.38) legend:Category_5_=_≥157_mph_(≥252_km/h)_(C5) Backgroundcolors = canvas:canvas BarData = barset:Hurricane bar:Month PlotData= barset:Hurricane width:11 align:left fontsize:S shift:(4,-4) anchor:till from:22/05/2013 till:29/05/2013 color:C1 text:"Agatha" from:31/05/2013 till:01/06/2013 color:TD text:"Two" from:17/06/2013 till:19/06/2013 color:TS text:"Blas" from:24/06/2013 till:30/06/2013 color:C1 text:"Celia" from:03/07/2013 till:07/07/2013 color:TS text:"Darby" from:16/07/2013 till:26/07/2013 color:C4 text:"Estelle from:17/07/2013 till:18/07/2013 color:TD text:"Seven" barset:break from:21/07/2013 till:24/07/2013 color:TD text:"Eight" from:24/07/2013 till:03/08/2013 color:C1 text:"Frank" from:24/07/2013 till:29/07/2013 color:TD text:"Ten" from:27/07/2013 till:29/07/2013 color:TD text:"One-C" from:03/08/2013 till:04/08/2013 color:TS text:"Georgette" from:12/08/2013 till:14/08/2013 color:TD text:"Twelve" from:16/08/2013 till:18/08/2013 color:TS text:"Howard" barset:break from:19/08/2013 till:24/08/2013 color:TS text:"Isis" from:20/08/2013 till:31/08/2013 color:C4 text:"Javier" from:28/08/2013 till:03/09/2013 color:TS text:"Kay" from:08/09/2013 till:09/09/2013 color:TD text:"Seventeen" from:13/09/2013 till:17/09/2013 color:TS text:"Lester" from:15/09/2013 till:22/09/2013 color:TS text:"Madeline" from:18/09/2013 till:24/09/2013 color:C1 text:"Newton" barset:break from:19/09/2013 till:19/09/2013 color:TD text:"Twenty-one" from:21/09/2013 till:25/09/2013 color:C1 text:"Orlene" from:28/09/2013 till:02/10/2013 color:C2 text:"Paine" from:15/10/2013 till:22/10/2013 color:C4 text:"Roslyn" from:22/10/2013 till:24/10/2013 color:TD text:"Twenty-five" bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/05/2013 till:01/06/2013 text:May from:01/06/2013 till:01/07/2013 text:June from:01/07/2013 till:01/08/2013 text:July from:01/08/2013 till:01/09/2013 text:August from:01/09/2013 till:01/10/2013 text:September from:01/10/2013 till:01/11/2013 text:October from:01/11/2013 till:01/12/2013 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「1986 Pacific hurricane season」の詳細全文を読む スポンサード リンク
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