|
The 1864 Atlantic hurricane season was the third consecutive Atlantic hurricane season with no hurricane landfall in the United States – the longest period on record. However, in the absence of modern satellite and other remote-sensing technologies, only storms that affected populated land areas or encountered ships at sea were recorded, so the actual total could be higher. An undercount bias of zero to six tropical cyclones per year between 1851 and 1885 has been estimated. Of the five known 1864 cyclones, four were first documented in 1995 by Jose Fernandez-Partagas and Henry Diaz. The first system was initially observed offshore the Southeastern United States on July 16. It peaked as a Category 1 hurricane on the modern day Saffir–Simpson hurricane wind scale. Moving rapidly northeastward, the storm was last noted well east of Newfoundland on July 18. The next system was observed in the south-central Gulf of Mexico on July 25. Because the cyclone was not tracked further, only a single-point storm path exists. After tropical cyclogenesis was dormant for over a month, another hurricane was spotted on August 26 to the east of Lesser Antilles. Early on the following day, the hurricane crossed the islands between Dominica and Martinique. After traversing the Caribbean Sea, the storm made landfall in Belize late on August 31, before dissipating the next day. Offshore Belize, several ships encountered the storm. Along the coast, storm surge flooded some areas. The fourth tropical storm was observed off the East Coast of the United States between September 5 and September 9. A number of ships sailing in the vicinity of the storm encountered heavy gales. The fifth and final known tropical cyclone was also tracked offshore the East Coast of the United States. Similarly, many vessels experienced rough seas and severe thunderstorms. The season's activity was reflected with 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, 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 39 mph (63 km/h), which is tropical storm strength. ==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:01/07/1864 till:01/11/1864 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/07/1864 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:16/07/1864 till:18/07/1864 color:C1 text:"One (C1)" from:25/07/1864 till:25/07/1864 color:TS text:"Two (TS)" from:26/08/1864 till:01/09/1864 color:C1 text:"Three (C1)" from:05/09/1864 till:08/09/1864 color:TS text:"Four (TS)" from:22/10/1864 till:24/10/1864 color:C1 text:"Five (C1)" bar:Month width:15 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/07/1864 till:01/08/1864 text:July from:01/08/1864 till:01/09/1864 text:August from:01/09/1864 till:01/10/1864 text:September from:01/10/1864 till:01/11/1864 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「1864 Atlantic hurricane season」の詳細全文を読む スポンサード リンク
|