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Severe Tropical Storm Maysak, known in the Philippines as Tropical Storm Quinta-Siony, was recognised as the 19th tropical storm by the Japan Meteorological Agency. It was also recognised as the 24th tropical depression and the 22nd tropical storm by the Joint Typhoon Warning Center of the 2008 Pacific typhoon season. ==Meteorological history== On November 5, 2008, a tropical disturbance formed in the Philippine Sea to the northeast of Zamboanga in the Philippines.〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕 Later that day whilst the disturbance moved towards the north-west, the Joint Typhoon Warning Center assessed the disturbances chances of forming into a significant tropical cyclone within 24 hours as "Poor".〔 Early the next day as the disturbance was moving closer to the Philippines, PAGASA designated the disturbance as Tropical Depression Quinta.〔 Later that day the JTWC upgraded the disturbances chances of becoming a significant tropical cyclone to "Fair" and then to "Good" as they released a Tropical Cyclone Formation Alert on the developing disturbance.〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕 The Japan Meteorological Agency then designated the disturbance as a minor tropical depression, at the same time the JTWC designated the tropical depression as 24W.〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕 On November 7 after the JMA had designated the minor tropical depression as a full tropical depression, the JTWC and the JMA upgraded the depression to a tropical storm with the JMA assigning the name Maysak.〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕 The next day PAGASA released their final advisory on tropical storm Quinta (Maysak) as it had moved out of PAGASA's area of responsibility, this came as both the JTWC and the JMA reported that Maysak had reached its peak wind speeds of 60 mph (95 km/h) 10-Min sustained & 70 mph (110 km/h) 1-Min sustained.〔〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕 This meant that the JMA considered Maysak to be a severe tropical storm at its peak whilst on the Saffir-Simpson Hurricane Scale Maysak was considered to be a tropical storm.〔 Later that day Maysak recurved and started moving towards the south towards PAGASA's area of responsibility. The next day before Maysak re-entered PAGASA's area of responsibility, the JMA reported that Maysak had weakened into a tropical storm and then into a tropical depression, and released their final full advisory on Maysak.〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕 However the JTWC were reporting at this time that Maysak was still a tropical storm.〔 Maysak then moved back into PAGASA's area of responsibility later that day, at this time PAGASA thought that Maysak was still a tropical storm.〔(【引用サイトリンク】publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration )〕 The JTWC downgraded Maysak to a tropical depression and released their final advisory early on November 10.〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕 PAGASA also downgraded Maysak to a tropical depression at this time however they kept issuing warnings until early the next afternoon when they released their final advisory on Quinta.〔(【引用サイトリンク】publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration )〕 On November 12, PAGASA started to reissue advisories on Quinta, however they renamed Quinta as Siony.〔(【引用サイトリンク】publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration )〕 The JMA were also still monitoring Siony as a minor tropical depression at this time, whilst the JTWC assessed Maysak's remnants chances of regenerating into a significant tropical cyclone as fair.〔(【引用サイトリンク】publisher=Japan Meteorological Agency )〕〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕 Later that day the JTWC upgraded the remnants chances of regenerating as good and released a tropical cyclone formation alert.〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕 Later that day PAGASA released their final advisory on tropical depression Siony as it had moved out of their area of responsibility and was moving towards Vietnam in the west.〔(【引用サイトリンク】publisher=Philippine Atmospheric, Geophysical and Astronomical Services Administration )〕 Late the next day the JTWC cancelled the tropical cyclone formation alert as they had reassessed Maysak chances of forming into a significant tropical cyclone within 24 hours as poor.〔(【引用サイトリンク】publisher=Joint Typhoon Warning Center )〕 Early the next day the JMA released their final advisory on tropical depression Maysak whilst later that morning the JTWC declared that Maysak had dissipated. 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「Tropical Storm Maysak (2008)」の詳細全文を読む スポンサード リンク
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