Typhoon Olive (1971)

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Saffir–Simpson scale
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

At 06:00 UTC on July 24, the China Meteorological Agency started to monitor an area of scattered convection and circulation in weather maps which was located in a near-equatorial trough, located to the east of Guam. [1] The agency estimated the barometric pressure of the disturbance to be 1010 mbar at that time. [1] Nearly two days after, the agency upgraded the system to a weak tropical depression, estimating the sustained winds to be at 35 km/h (20 mph), despite the disturbance being highly disorganized at that time. [1] On July 29, at 08:00 UTC, the Joint Typhoon Warning Center stated that the disturbance was now detected in their radar imagery and also started to watch the system's movement. [2] Also at that time, the CMA upgraded the system to a tropical storm based on their estimations. [1] At that time, the disturbance is highly disorganized, with its convection steered to the northeast, possibly due to the hostile environment where the system formed. [1] It started to move to the west while slowly consolidating before curving to the northeast, due to the influence of a subtropical ridge to its north. [2] Throughout the day, its circulation became defined, although it remained disorganized. [2] As the said ridge began to strengthen and dominate, the system turned sharply to the west in the early hours of July 30. [2] [1] It then slowly meandered on the area, where its organization became defined on satellite imagery. [2] Between 11:00 and 12:00 UTC of that day, the JTWC upgraded the system to a tropical storm and named it Olive. [2] The system had a good outflow, as being evidenced by radar imagery. [2]

Olive then slightly moved to the west-northwest before taking a north-northwestward track due to the weakness of another subtropical ridge, which was located near the Philippines. [2] The system also slowed down, before intensifying to a severe tropical storm at 18:00 UTC on the next day as the forward motion of the storm speeded. [1] Another ridge pulled the system to the northwest before again, slowing down as Olive became poorly defined on satellite images. [1] [2] On 12:00 UTC on August 1, the CMA upgraded the system to a minimal typhoon based on an estimate of 68 knots and an emerging eye; however, the JTWC only elevated the system's intensity to typhoon status at the same time on the next day. [1] [2] The system then accelerated to the northwest before intensifying further to a Category 2 typhoon at 12:00 UTC on August 3 and reached its peak intensity shortly, with maximum sustained winds of 155 km/h (95 mph) and an unusually low minimum barometric pressure of 935 mbar, as being recorded by a reconnaissance aircraft. [2] It then started to slow down and impact the northern part of the Ryukyu Islands, with Olive passing near Yakushima Island before midnight at its peak. [2] With the influence of a long-wave trough near the coast of East China, the system took a northward motion before making landfall on the main Japanese island of Kyushu, near Nagasaki Prefecture on the early hours of August 5 as it weakened to a minimal typhoon due to the interaction with the island. [1] [2] [3] It rapidly unraveled to a tropical storm as it passed through Saga Prefecture before moving through the Sea of Japan before midday. [2] It then made its closest approach with South Korea on August 6 before starting to curve to the northeast. [2] Olive then neared Nakhodka in Primorsky Krai on August 8 before weakening further to a tropical depression, shortly before becoming extratropical early the next day. [1] [2]

The extratropical remnants of Olive then passed through the La Pérouse Strait, a strait which separates the Russian island of Sakhalin and northern part of Hokkaido in Japan before moving through the Pacific Ocean before dissipating on August 10 near the International Date Line. [2]

Preparations and impact

Japan

Starting from October 4, the meteorological forecasters in the country are preparing for the brunt of Olive. [4] Rains were expected to be torrential and floods were also predicted. [4] Train and airline services in Kyushu were suspended, starting on August 5. [5]

A conducted research about Olive reported that the rain more dominated than the winds, classifying the system as a rain typhoon. [6] Heavy inundation damages were also seen throughout the southern part of Japan. [1] The Yakushima Station in Yakushima Island reported winds up to 80 knots and a minimum pressure of 938.7 mb, while no reports of damages were seen. [2] In Kasedashi City, Kagoshima, torrential downpours broke the embankment of the Kaseda River, flooding houses and establishments near the area. [7] The Kuma River in Kumamoto Prefecture also overflowed, destroying 209 houses and flooding 2,647 more. [8] The dam in the prefecture, namely Ichifusa Dam, also released large amounts of water to avoid failure, flooding its lake and destroying some houses nearby. [2]

A rainfall amount of 59.8 inches in Ebino, Miyazaki Prefecture were recorded causing widespread landslides, which killed 69 individuals. [2] [9] [10] The avalanche also destroyed houses and injured 209 persons, with the majority are because they are rescued from getting trapped in their houses. [2] Authorities in seas reported that 27 boats sunk in the Pacific Ocean and Sea of Japan, while two more large ships were agrounded; however, no names of the ships were given to the authorities. [2] [11] [5] All transportations, including train services, air traffic, sea services and shipping were suspended and affected, while incomplete reports said that 77 roads throughout Kyushu were destroyed. [12] [13] [14] Rainshowers were also reported as far as Tokyo, according to some individuals. [5]

Total deaths from Olive in Japan were at 69, while the damages were unknown. [15]

13th World Scout Jamboree

The typhoon heavily disrupted the activities of the 13th World Scout Jamboree, which was held in Fujinomiya, Shizuoka Prefecture from August 2 to 10, also the week when Olive formed. [16] [2] The rains started to pour on August 3, but this is due to an existing front. [17] The aftermath of the rains caused floods that reached their campsite. in Mount Fuji. [17] As a result, the Japanese Boy Scout Officials there ordered the mandatory evacuations of the scouts to an unknown place. [17] [4] [18] [5] The event was also attended by Neil Armstrong; however, the scouts are gone as the astronaut went there. [17] Later reports said that the scouts went to different sites such as temples, city halls, nearby schools, and the Self-Defense Force base. [17] The evacuation was hampered by tourist busses and tourists that went on Tokyo to see Prince Akihito; however, this was also canceled following the typhoon. [17]

As Olive battered Shizuoka Prefecture between October 8 and 10, torrential rains and gale-force winds destroyed some tents and the campsite was reported to be flooded and washed out. [17] [2] No deaths and injuries were reported throughout the event; however, this resulted in limited activities on the campground of the scouts, according to the headquarters of the Boy Scouts of America in New Brunswick. [17] [5]

South Korea

Despite not making landfall at any part of South Korea, Olive caused damages on the southern coasts of the country. A rainfall amount of 390.8 mm and a total of 444.0 mm were recorded at Samcheok, Gangwon Province. [19] Ulleungdo recorded the lowest barometric pressure from the storm at 976.2 hPa and the fastest instantaneous wind speed from Olive, at 32.0 m/s. while Pohang reported the fastest wind speed, at 19.3 m/s. [19] Reports from different institutions and agencies, including Seoul's National Disaster Relief Center, said that Olive killed 27 in the country, all due to unknown reasons. [19] Flash floods and widespread landslides were also seen. [20]

See also

Related Research Articles

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<span class="mw-page-title-main">Typhoon Shanshan (2024)</span> Pacific typhoon

Typhoon Shanshan was a powerful tropical cyclone that moved through Japan in August 2024. The tenth named storm and fourth typhoon of the annual typhoon season, Shanshan was first noted near the Mariana Islands on August 20, with deep convection beginning to consolidate. The following day, the Japan Meteorological Agency (JMA) upgraded it to a tropical storm and named it Shanshan. Early the next day, both the JMA and the Joint Typhoon Warning Center (JTWC) classified it as a minimal typhoon. Shanshan turned west-northwestward and stalled near Kikaijima, reaching its peak intensity with ten-minute sustained winds of 175 km/h (110 mph) and a central pressure of 935 hPa (27.61 inHg). It then peaked at Category 4-equivalent intensity on the Saffir–Simpson scale on August 27, with one-minute sustained winds of 215 km/h (130 mph). As the typhoon moved through the Ryukyu Islands, it further decayed, becoming cooler and less defined. Shanshan turned northward between two mid-level subtropical ridges and made landfall near Satsumasendai in Kagoshima Prefecture around 8 a.m. local time on August 29. It then turned eastward along the northern edge of a subtropical high and quickly crossed the Seto Inland Sea before making landfall over the northern tip of Shikoku on August 30. Shanshan's convection has slightly increased over the past six hours as its circulation moved back over open water and began progressing east-southeastward due to interaction with a mid-latitude trough. It then moved inland over Japan and dissipated on September 1.

References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 "IBTrACS - International Best Track Archive for Climate Stewardship". ibtracs.unca.edu. Retrieved 2021-04-15.
  2. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 "Annual Tropical Cyclone Report of 1971" (PDF). Joint Typhoon Warning Center . Retrieved April 15, 2021.
  3. ↑ "METEOROLOGICAL RESULTS 1971" (PDF). Hong Kong Observatory . Retrieved April 16, 2021.
  4. 1 2 3 "Cold Overcomes Boy, Scout Leader". Spokane Chronicle. 1971-08-04. p. 19. Retrieved 2021-04-16.
  5. 1 2 3 4 5 "Typhoon Olive Wallops Japan's Western Coast". The Lima News. 1971-08-05. p. 16. Retrieved 2021-04-16.
  6. ↑ "昭和46年8月5日九州西岸に上陸した台風第19号に関する異常気象速報 - 国立国会図書館デジタルコレクション". dl.ndl.go.jp (in Japanese). 佐賀地方気象台. Retrieved 2020-05-09.
  7. ↑ "昭和４６年・台風１９号 - 西日本新聞フォトライブラリー". c.nishinippon.co.jp (in Japanese). Retrieved 2020-05-09.
  8. ↑ "昭和46年8月洪水". 八代河川国道事務所. Retrieved 2020-06-29.
  9. ↑ "78 Dead in Storm's Wake In Japan and South Korea". The New York Times. 1971-08-07. ISSN   0362-4331 . Retrieved 2021-04-16.
  10. ↑ "Typhoon Olive Hits Japan". Nanaimo Daily News. 1971-08-05. p. 1. Retrieved 2021-04-16.
  11. ↑ "Typhoon Olive Sweeps Japan". The Mercury. 1971-08-06. p. 1. Retrieved 2021-04-16.
  12. ↑ "Typhoon Olive Sweeps Japan". Latrobe Bulletin. 1971-08-05. p. 20. Retrieved 2021-04-16.
  13. ↑ "Typhoon Olive kills 7". The Boston Globe. 1971-08-05. p. 8. Retrieved 2021-04-16.
  14. ↑ "Typhoon Olive Hits Island". Leader-Telegram. 1971-08-05. p. 1. Retrieved 2021-04-16.
  15. ↑ "デジタル台風：台風197119号 (OLIVE) - 災害情報". agora.ex.nii.ac.jp. Retrieved 2020-05-09.
  16. ↑ "Wet Scouts Come Home". The Central New Jersey Home News. 1971-08-12. p. 7. Retrieved 2021-04-16.
  17. 1 2 3 4 5 6 7 8 "Floods Force Closing of Jamboree Camp". The Record. 1971-08-06. p. 15. Retrieved 2021-04-16.
  18. ↑ "Typhoon Olive Strikes Japan". Wisconsin State Journal. 1971-08-06. p. 4. Retrieved 2021-04-16.
  19. 1 2 3 "[한반도 영향 태풍] 1971년 19호 태풍 올리브". archive.fo. 2020-09-10. Archived from the original on 2020-09-10. Retrieved 2021-04-16.
  20. ↑ "Typhoon Olive Claims 78 Lives, Injures Many More". El Paso Times. 1971-08-07. p. 2. Retrieved 2021-04-17.

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Typhoon Olive
OliveAugust319710505UTCESSA9.gif
Olive nearing peak intensity on August 3, with the island of Kyushu in Japan visible to the north.