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Typhoon Yancy, known in the Philippines as Typhoon Tasing, was one of the costliest and intense tropical cyclones to strike Japan on record. Yancy was the sixth typhoon of the annual typhoon season and sixth tropical cyclone overall to impact Japan that year. Developing out of an area of disturbed weather in the open northwest Pacific on August 29, 1993, the precursor to Yancy tracked westward and quickly intensified to reach tropical storm strength on August 30. Just two days later, the tropical storm reached typhoon intensity as it recurved towards the northeast. A period of rapid intensification followed, allowing Yancy to quickly reach super typhoon intensity. The strong tropical cyclone reached peak intensity on September 2 with maximum sustained winds of 175 km/h (110 mph). The following day Yancy made its first landfall on Iōjima at nearly the same strength; over the course of the day the typhoon would make three subsequent landfalls on Japanese islands. Land interaction forced the tropical cyclone to weaken, and after its final landfall on Hiroshima Prefecture, Yancy weakened below typhoon intensity. After emerging into the Sea of Japan, Yancy transitioned into an extratropical cyclone; these remnants persisted as they meandered in the sea before dissipating completely on September 7. ==Meteorological history== In late August, an area of convection began to persist in the open northwestern Pacific, well removed from any landmasses. The Joint Typhoon Warning Center (JTWC) started to monitor the disturbance at 1200 UTC on August 27. Aided by a southwesterly monsoonal wind flow and in an area of favorable conditions, the system organized, and at 0600 UTC on August 28, the JTWC issued a Significant Tropical Weather Advisory on the disturbance. Organization continued throughout the day's course, and the system was classified by the Japan Meteorological Agency (JMA) as a tropical depression at 0000 UTC on August 29. Shower activity at that time began to coalesce more closely around the system's center of circulation, prompting the JTWC to issue a Tropical Cyclone Formation Alert an hour later. Based on satellite intensity estimates, the agency also reclassified the system as a tropical depression at 0600 UTC that day.〔 At the time, the depression was positioned roughly northwest of Guam. Through tropical cyclogenesis, the primitive depression tracked westward, in the direction of Taiwan.〔 At 0000 UTC on August 30, the JMA upgraded the system to tropical storm intensity,〔 followed by the JTWC six hours later based on a ship report in the vicinity of the cyclone.〔 Yancy continued to gradually intensify, and according to the JMA the storm reached severe tropical storm intensity at 1200 UTC on August 31.〔 By this time, Yancy started to curve towards the northwest.〔 Later that day, the tropical storm began developing a banding eye feature. This was reflected in satellite intensity estimates, prompting the JTWC to upgrade Yancy to typhoon status.〔 The JMA maintained the storm's severe tropical storm status through this period, though on September 1 the agency initiated 3-hour position fixes in contrast to their usual 6-hour fix procedure; at 0300 UTC that day the JMA upgraded Yancy to typhoon intensity. Upon upgrade, Yancy was estimated to have a minimum barometric pressure of 965 mbar (hPa; 28.50 inHg).〔 At the time the typhoon was positioned approximately south-southwest of Okinawa.〔 Rapid intensification ensued,〔 and just nine hours later the JTWC estimated Yancy's winds to have equated to that of a Category 3 on the Saffir–Simpson scale.〔 The JTWC upgraded the typhoon to super typhoon status at 0600 UTC on September 3 as one-minute sustained winds were estimated to have reached the threshold of 130 kt (240 km/h, 150 mph).〔 Three hours later the JMA estimated Yancy to have peaked in strength with ten-minute sustained winds of 175 km/h (110 mph) and a minimum barometric pressure of 925 mbar (hPa; 27.32 inHg); this intensity would be held for the following 18 hours.〔 Only minimal weakening occurred in the immediate hours following peak intensity, and at around 0600 UTC on September 3, Yancy passed directly over Iōjima.〔 Tracking rapidly northeastward at around 40 km/h (25 mph),〔 Yancy made a second landfall on Kagoshima Prefecture within an hour later at the same intensity;〔 at the time this made Yancy the strongest tropical cyclone ever to make landfall on Japan since Typhoon Shirley in 1965, 28 years prior.〔 Land interaction with Kyushu further weakened Yancy,〔 but the system remained at typhoon intensity upon its landfall on western Ehime Prefecture at around 1400 UTC that day. The JTWC estimated that the typhoon was still maintaining Category 3 intensity upon landfall on Ehime.〔 This particular landfall greatly weakened Yancy, and despite the storm briefly emerging over intra-insular waters, was only a minimal typhoon by the time of its final landfall on Hiroshima Prefecture at 1600 UTC that day. Shortly following the tropical cyclone's final landfall, Yancy weakened below typhoon intensity to severe tropical storm classification. Continuing to track northeast, the weakening cyclone underwent extratropical transition and was assessed to have fully transitioned into an extratropical storm by 1200 UTC on September 4 while located in the northeastern Sea of Japan.〔〔 Yancy's extratropical remnants persisted for several days as they meandered within the Sea of Japan before dissipating by 1200 UTC on September 7.〔 ==Preparations== In preparation for Typhoon Yancy, bus and rail services in potentially affected areas were halted. Some schools were also closed. Though no initial evacuation orders were made, caution was advised to people living in Kyushu. Forecasts prior to Yancy's landfalls on Japan raised fears that the storm would be one of the strongest in the past 50 years to strike the country. In Okinawa, 15,000 passengers were stranded after most flights arriving and departing from the island were cancelled by airlines. An additional 330 domestic flights were cancelled across western Japan,〔 stranding 5,600 persons. As Yancy neared the country, approximately 4,600 people were forced to evacuate from flood and landslide-prone areas of Kagoshima. Pop star Michael Jackson postponed a scheduled performance in Taiwan, potentially as a result of Typhoon Yancy. However, these claims were denied by his tour promoters and associated staff. 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「Typhoon Yancy (1993)」の詳細全文を読む スポンサード リンク
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