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Typhoon Halong (2014)
Typhoon Halong, known in the Philippines as Typhoon Jose, was a violent typhoon in the Western Pacific basin in August 2014. It is the twelfth named storm and the fifth typhoon of the annual typhoon season. The storm reached its maximum intensity as a Category 5 super typhoon, making it the fifth strongest storm of the season, surpassed by Genevieve, Vongfong, Nuri and Hagupit.
==Meteorological history==
On July 26, JMA monitors a low-pressure area near Chuuk. The system stalled for a few days and was upgraded into a tropical depression on July 27. Early on July 29, the depression showed signs of intensification and with that, JTWC upgraded it to Tropical Storm 11W. Later that day, JMA upgraded 11W to Tropical Storm Halong.〔(【引用サイトリンク】url=http://www.westernpacificweather.com/2014/07/28/okinawa-and-possible-tropical-storm-halong-tuesday-update/ )〕 In the same time Halong started developing a small, unclear eye.〔(【引用サイトリンク】url=http://www.westernpacificweather.com/2014/07/29/typhoon-warnings-in-place-as-halong-moves-over-guam/ )〕 With this, gale and typhoon force winds were reported over Guam.〔(【引用サイトリンク】url=http://www.westernpacificweather.com/2014/07/29/ts-watches-in-guam-possible-tropical-storm-nakri-tuesday-update/ )〕
Very late on July 30, JMA upgraded Halong to a severe tropical storm. The next day, both agencies upgraded it to a minimal typhoon. In the same time, Halong started its rapid deepening phase. On August 2, Halong's eye developed clearer than before as the system underwent explosive intensification from a category 1 typhoon to a Category 3 in less than 24 hours. Rapid deepening continued and eventually became a category 5 super typhoon, with pressure dropping from 980 to 925 mbar in 48 hours.〔(【引用サイトリンク】url=http://www.stripes.com/blogs/pacific-storm-tracker/pacific-storm-tracker-1.257110/typhoon-11w-halong-19-strengthening-tracking-even-closer-to-okinawa-1.295683 )〕〔(【引用サイトリンク】url=https://www.youtube.com/watch?v=bd88W6hA75o )〕 But late that day, JMA instead made Halong's maximum strength at a pressure of 920 mbar. On August 4, Halong weakened to a category 4 typhoon, due to undergoing an eyewall replacement cycle. The next day, Halong weakened to a minimal typhoon, although it was a deep typhoon due to its pressure. In the same day, its convection was steadily weakening.〔(【引用サイトリンク】url=http://phys.org/news/2014-08-nasa-satellite-lopsided-typhoon-halong.html )〕
On August 6, NASA has reported that Halong was beginning to replace a new eye. This made the JTWC upgraded it to a category 2 typhoon again.〔(【引用サイトリンク】url=http://phys.org/news/2014-08-typhoon-halong-eye-nasa.html )〕 Its eye continued to undergo the eyewall replacement cycle until August 8. In the same day, Halong weakened to a category 1 and started to affect mainland Japan.〔(【引用サイトリンク】url=http://www.nasa.gov/content/goddard/11w-northwestern-pacific-ocean/ )〕 The JTWC downgraded Halong to a tropical storm on August 9, while the JMA followed suit several hours later. Halong made landfall over the southern part of Japan prior to August 10.〔(【引用サイトリンク】url=http://www.nasa.gov/content/goddard/11w-northwestern-pacific-ocean/ )〕 On August 10, JTWC made their final bulletin on Halong, as it was leaving the country.〔(【引用サイトリンク】url=http://www.nasa.gov/content/goddard/11w-northwestern-pacific-ocean/ )〕 The JMA made their final advisory too on August 11, as it was becoming extratropical. Its remnants dissipated early on August 15 over Siberia, as it was absorbed by a developing extratropical system.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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