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The 1970 Atlantic hurricane season was the first season to include a named storm in the month of May since 1959. The season officially began on June 1, 1970, and lasted until November 30, 1970. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. The season was fairly average, with 10 total storms forming, of which five were hurricanes. Two of those five became major hurricanes, which are Category 3 or higher on the Saffir–Simpson hurricane wind scale. The first system, Hurricane Alma, developed on May 17. The storm killed eight people, seven from flooding in Cuba and one from a lightning strike in Florida. In July, Tropical Storm Becky brought minor flooding to Florida and other parts of the Southern United States, leaving one death and about $500,000 (1970 USD) in damage. The most significant storm of the season was Hurricane Celia, a Category 3 hurricane that slammed South Texas in early August. Celia resulted in about $930 million in damage and was the costliest hurricane in Texas until Alicia in 1983. There were 28 fatalities, with four in Cuba, eight in Florida, and sixteen in Texas. Later that month, Tropical Storm Dorothy caused severe flooding in Martinique, which left up to 51 deaths and $34 million in damage. A girl died in Mexico as a result of Hurricane Ella after her house collapsed on her. In October, Tropical Depression Nineteen brought a devastating flood to Puerto Rico. At least 22 fatalities and $65.5 million in damage occurred. Collectively, the storms of this season left at least $1.03 billion in damage and 112 deaths. ==Season summary== 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:01/05/1970 till:30/11/1970 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/05/1970 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:10 align:left fontsize:S shift:(4,-4) anchor:till from:17/05/1970 till:26/05/1970 color:C1 text:"Alma (C1)" from:19/07/1970 till:23/07/1970 color:TS text:"Becky (TS)" from:31/07/1970 till:05/08/1970 color:C3 text:"Celia (C3)" from:15/08/1970 till:18/08/1970 color:TS text:"Four (TS)" from:17/08/1970 till:23/08/1970 color:TS text:"Dorothy (TS)" barset:break from:08/09/1970 till:13/09/1970 color:C3 text:"Ella (C3)" from:12/09/1970 till:17/09/1970 color:TS text:"Felice (TS)" from:23/09/1970 till:12/10/1970 color:TD text:"Nineteen (TD)" from:26/09/1970 till:05/10/1970 color:TS text:"Greta (TS)" from:12/10/1970 till:17/10/1970 color:C2 text:"Nine (C2)" barset:break from:20/10/1970 till:28/10/1970 color:C1 text:"Ten (C1)" barset:skip bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/05/1970 till:01/06/1970 text:May from:01/06/1970 till:01/07/1970 text:June from:01/07/1970 till:01/08/1970 text:July from:01/08/1970 till:01/09/1970 text:August from:01/09/1970 till:01/10/1970 text:September from:01/10/1970 till:01/11/1970 text:October from:01/11/1970 till:30/11/1970 text:November TextData = pos:(570,30) text:"(From the" pos:(618,30) text:"Saffir-Simpson Hurricane Scale)" The Atlantic hurricane season officially began on June 1, though activity began slightly earlier with Hurricane Alma forming on May 17 – the first named storm in the month of May since Arlene in 1959. Although 22 tropical depressions developed, only seven of them reach tropical storm intensity; this was slightly above the 1950–2000 average of 9.6 named storms. Five of these reached hurricane status, slightly under the 1950–2000 average of 5.9.〔 Furthermore, two storms reached major hurricane status; near the average 1950–2000 average of 2.3.〔 Three hurricanes and five tropical storms made landfall during the season, causing at least 112 deaths and over $1.08 billion in damage. Additionally, Tropical Depression Nineteen left damage and fatalities. The Atlantic hurricane season officially ended on November 30,〔 though the final tropical cyclone became extratropical on October 28. The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 40. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. It is only calculated for full advisories on tropical systems at or exceeding , which is tropical storm strength. 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「1970 Atlantic hurricane season」の詳細全文を読む スポンサード リンク
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