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The 1917 Atlantic hurricane season featured nine known tropical cyclones, four of which made landfall.〔 The first system appeared on July 6 east of the Windward Islands. After crossing the islands and traversing the Caribbean Sea, the storm struck Honduras, Belize, and Mexico, before dissipating on July 14. After more than three weeks without tropical cyclogenesis, another tropical storm developed west of Bermuda. As the storm brushed eastern New England, four ships sank near Nantucket, causing 41 fatalities. The same cyclone brought damaging winds to Nova Scotia before transitioning into an extratropical cyclone on August 10. A hurricane developed over the central Atlantic Ocean on August 30 and ultimately affected Bermuda with heightened tides as it passed to the east. Elsewhere, the hurricane had little impact, becoming extratropical on September 5. After the third system, a series of four tropical depressions formed, but failed to become severe. The fourth hurricane brought devastation to Jamaica, Cuba, and portions of the Gulf Coast of the United States, especially western parts of the Florida Panhandle. Overall, the storm left six deaths and inflicted at least $170,000 (1917 USD) in damage. The season's activity can be quantified in an accumulated cyclone energy (ACE) rating of 61. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed; therefore, storms that last a long time, as well as particularly strong hurricanes, have high ACE ratings. ==Storms== 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:01/06/1917 till:01/11/1917 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/06/1917 Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression_(TD)_=_<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:06/07/1917 till:14/07/1917 color:TS text:"Tropical Storm #1" (TS) from:06/08/1917 till:10/08/1917 color:TS text:"Tropical Storm #2" (TS) from:30/08/1917 till:05/09/1917 color:C3 text:"Hurricane #3" (C3) from:12/09/1917 till:14/09/1917 color:TD text:"TD" from:12/09/1917 till:16/09/1917 color:TD text:"TD" from:14/09/1917 till:14/09/1917 color:TD text:"TD" from:14/09/1917 till:15/09/1917 color:TD text:"TD" from:20/09/1917 till:30/09/1917 color:C4 text:"Hurricane #4" (C4) from:19/10/1917 till:20/10/1917 color:TD text:"TD" bar:Month width:15 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/06/1917 till:01/07/1917 text:June from:01/07/1917 till:01/08/1917 text:July from:01/08/1917 till:01/09/1917 text:August from:01/09/1917 till:01/10/1917 text:September from:01/10/1917 till:01/11/1917 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「1917 Atlantic hurricane season」の詳細全文を読む スポンサード リンク
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