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The 1981 Pacific typhoon season has no official bounds; it ran year-round in 1981, but most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November.〔Gary Padgett. (May 2003 Tropical Cyclone Summary. ) Retrieved 2007-01-05.〕 These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean. Tropical Storms formed in the entire west pacific basin were assigned a name by the Joint Typhoon Warning Center. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Atmospheric, Geophysical and Astronomical Services Administration or PAGASA. This can often result in the same storm having two names. A total of 35 tropical depressions formed this year in the Western Pacific, of which 29 became tropical storms. Of the 29, 13 storms reached typhoon intensity, of which 2 reached super typhoon strength. Seven tropical cyclones moved through the Philippines this season. The first tropical cyclone formed on March 11, with the final tropical cyclone dissipating December 28. Tropical cyclones only accounted for 12 percent of the rainfall in Hong Kong this season, the lowest percentage for the protectorate since 1972.〔Hong Kong Royal Observatory (1982). (Meteorological Results 1981: Part III - Tropical Cyclone Summaries. ) Retrieved of 2008-11-10.〕 ==Season summary== ImageSize = width:800 height:230 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:01/02/1981 till:31/12/1981 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/02/1981 Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression_=_<62_km/h_(<39_mph) id:TS value:rgb(0,0.98,0.96) legend:Tropical_Storm_=_63-88_km/h_(39-54_mph) id:ST value:rgb(0.80,1,1) legend:Severe_Tropical_Storm_=_89-117_km/h_(55-73_mph) id:TY value:rgb(0.99,0.69,0.6) legend:Typhoon_=_>118_km/h_(>74_mph) Backgroundcolors = canvas:canvas BarData = barset:Hurricane bar:Month PlotData= barset:Hurricane width:10 align:left fontsize:S shift:(4,-4) anchor:till from:14/02/1981 till:16/02/1981 color:TD text:"Atring" from:11/03/1981 till:17/03/1981 color:TY text:"Freda" from:14/04/1981 till:20/04/1981 color:ST text:"Gerald" from:29/04/1981 till:10/05/1981 color:TS text:"Holly" from:07/06/1981 till:14/06/1981 color:ST text:"Ike" from:15/06/1981 till:22/06/1981 color:TY text:"June" from:28/06/1981 till:05/07/1981 color:ST text:"Kelly" from:01/07/1981 till:07/07/1981 color:ST text:"Lynn" from:07/07/1981 till:08/07/1981 color:TD text:"Goring" from:17/07/1981 till:20/07/1981 color:ST text:"Maury" barset:break from:22/07/1981 till:23/07/1981 color:TS text:"Nina" from:27/07/1981 till:01/08/1981 color:ST text:"Ogden" from:30/07/1981 till:01/08/1981 color:TD text:"Luming" from:31/07/1981 till:02/08/1981 color:TS text:"11W" from:03/08/1981 till:04/08/1981 color:ST text:"Phyllis" from:03/08/1981 till:09/08/1981 color:TS text:"Roy" from:06/08/1981 till:13/08/1981 color:ST text:"Susan" from:08/08/1981 till:09/08/1981 color:TD text:"Narsing" from:15/08/1981 till:23/08/1981 color:TY text:"Thad" from:16/08/1981 till:19/08/1981 color:ST text:"Vanessa" barset:break from:17/08/1981 till:20/08/1981 color:TS text:"Warren" from:25/08/1981 till:01/09/1981 color:TY text:"Agnes" from:02/09/1981 till:07/09/1981 color:TY text:"Bill" from:13/09/1981 till:22/09/1981 color:TY text:"Clara" from:19/09/1981 till:23/09/1981 color:TY text:"Doyle" from:24/09/1981 till:02/10/1981 color:TY text:"Elsie" from:24/09/1981 till:26/09/1981 color:TD text:"Saling" from:10/10/1981 till:14/10/1981 color:TS text:"Fabian" from:13/10/1981 till:23/10/1981 color:TY text:"Gay" from:10/11/1981 till:11/11/1981 color:TD text:"TD" barset:break from:12/11/1981 till:23/11/1981 color:TY text:"Hazen" from:17/11/1981 till:27/11/1981 color:TY text:"Irma" from:21/11/1981 till:26/11/1981 color:TS text:"Jeff" from:09/12/1981 till:21/12/1981 color:TY text:"Kit" from:22/12/1981 till:28/12/1981 color:TY text:"Lee" barset:skip bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/02/1981 till:28/02/1981 text:February from:01/03/1981 till:30/03/1981 text:March from:01/04/1981 till:30/04/1981 text:April from:01/05/1981 till:30/05/1981 text:May from:01/06/1981 till:30/06/1981 text:June from:01/07/1981 till:31/07/1981 text:July from:01/08/1981 till:31/08/1981 text:August from:01/09/1981 till:30/09/1981 text:September from:01/10/1981 till:31/10/1981 text:October from:01/11/1981 till:30/11/1981 text:November from:01/12/1981 till:31/12/1981 text:December The season started with Freda, which became the fourth March typhoon for the basin since 1959. The system passed west of Wake Island before dissipating on March 17. Gerald formed in mid-April near an upper level low, and recurved just east of Guam bringing the island heavy rainfall. Holly formed in the middle of the tropical Pacific ocean in late April, and dissipated far from land on May 7. Ike was the first system to form in the South China Sea, living during the second week of June before recurving across Taiwan and becoming an extratropical cyclone. June formed during the third week of June, and moved just east of Taiwan before approaching Japan as a nontropical cyclone. Kelly crossed the Philippines on July 1, moving into Vietnam on July 4. Lynn moved nearby the northern Philippines before making landfall in mainland China on July 7. Maury tracked near Taiwan, China, and eventually Vietnam as a remnant low during the third and fourth weeks of July. Nina formed on the northeast fringe of Maury, also moving into mainland China on July 23, three days after Maury. Ogden moved into Japan at the end of July, approaching Korea early in August. Tropical Depression 11 formed in the tropical west Pacific, dissipating well east of Asia on August 2. Phyllis formed and remained southeast of Japan on August 3 and August 4. Roy meandered around the South China Sea between August 3 and August 9. Susan moved northwest through the open western Pacific during the second week of August. Thad moved north-northeast through its life cycle, moving through Japan on August 23. Vanessa moved northeast through the open western Pacific in mid-August. Warren moved west-northwest through Hainan Island and northern Vietnam during the third week of August. Agnes moved extremely close to eastern China before dissipating on September 1. Bill recurved southeast of Japan during the first week of September. Clara moved west-northwest near Luzon and into mainland China during the third week of September. Doyle moved through the central Pacific during the third week of September. Elsie recurved south of Japan during the beginning of October. Fabian moved westward through the Philippines into Vietnam during the second week of October. Gay recurved near the Japanese coast on October 21 and 22. A tropical depression moved west-northwest into Vietnam on November 11. Hazen moved across the Central Philippines into mainland China by November 23. Irma moved across the northern Philippines and then south of Taiwan during late November. Jeff recurved east of mainland Asia during late November. Kit moved erratically westward towards the Philippines during mid-December. Lee moved across the central Philippines, dissipating across the South China Sea on December 28. 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「1981 Pacific typhoon season」の詳細全文を読む スポンサード リンク
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