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Tropical Storm Talas (2017)

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Severe Tropical Storm Talas
Severe Tropical Storm Talas near peak intensity and approaching Vietnam on July 16
Meteorological history
FormedJuly 14, 2017
DissipatedJuly 17, 2017
Severe tropical storm
10-minute sustained (JMA)
Highest winds95 km/h (60 mph)
Lowest pressure985 hPa (mbar); 29.09 inHg
Tropical storm
1-minute sustained (SSHWS/JTWC)
Highest winds95 km/h (60 mph)
Lowest pressure985 hPa (mbar); 29.09 inHg
Overall effects
Fatalities14 total
Damage$118 million (2017 USD)
Areas affectedVietnam, South China, Laos, Thailand, Myanmar
IBTrACSEdit this at Wikidata
Part of the 2017 Pacific typhoon season

Severe Tropical Storm Talas was a tropical cyclone that affected Vietnam in mid-July 2017. The storm was first identified as a tropical disturbance over the South China Sea on July 13 and was upgraded to a tropical depression the following day. On July 15, the depression intensified into a named storm of the 2017 Pacific typhoon season. Before making landfall in Vietnam, Talas reached its peak intensity as a severe tropical storm on July 16. It weakened to an area of low pressure on July 17 as it moved inland. Throughout Vietnam, the storm resulted in 14 fatalities and damaged approximately 2,700 homes. Rough seas caused about 50 boats to sink. Nearly 50,000 hectares (120,000 acres) of vegetable fields, around 800 ha (2,000 acres) of aquaculture, and 47,600 ha (118,000 acres) of rice and other subsidiary crops were affected. The storm caused an estimated US$8.8 million in damages in Hainan, China, increased rainfall in Myanmar and Thailand, and triggered landslides and flooding in parts of Central and Northern Laos.

Meteorological history

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Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
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
triangle Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

Talas originated from an area of convection, positioned between two north-south oriented ridges.[where?] On July 13, the Joint Typhoon Warning Center (JTWC) began monitoring a tropical disturbance located approximately 648 km (403 mi) southeast of Hanoi, Vietnam.[1] The Japan Meteorological Agency (JMA) classified the system as a weak tropical depression at around 06:00 UTC on July 14, as it started to move slowly towards the northwest at a speed of 19 kilometres per hour (12 mph).[2] Six hours later, the JMA issued advisories stating that the system was producing 10-minute sustained winds of at least 55 km/h (34 mph).[3] The JMA then[when?] upgraded it to a tropical storm, assigning it the name Talas.[4]

The JTWC issued a Tropical Cyclone Formation Alert at 02:30 UTC on July 15, after satellite imagery depicted deep convection wrapping into its developing low-level circulation center and a favorable environment for further development in Hainan, China.[5] As convective banding improved, the JTWC downgraded the disturbance to a tropical depression by midday on July 15.[6][7] The JTWC upgraded it to a tropical storm after recording Dvorak estimates of T2.5, indicating 1-minute sustained winds of 65 km/h (40 mph).[8]

On July 16, Talas gradually intensified as it became better organized due to a favorable environment consisting of low to moderate northeasterly vertical wind shear and good outflow to the south.[9] At 09:00 UTC, the JMA upgraded the storm to a severe tropical storm after it attained 10-minute sustained winds of 95 km/h (59 mph) and a minimum barometric pressure of 985 hPa (29.1 inHg), reaching its peak intensity.[10] At the same time, the JTWC recorded one-minute sustained peak winds of 95 km/h (59 mph) while trailing along Hainan.[11]

Shortly thereafter, Talas began to weaken due to land interaction and the JMA downgraded the system back to a tropical storm.[12] Around 18:00 UTC, the storm made landfall in Central Vietnam, near the city of Vinh.[13] Three hours later, the JTWC issued their final advisory on Talas as it continued to degrade while progressing inland.[14] Early in the following day, when the weakening storm was located over the northern portion of Laos, the JMA issued their final advisory as well.[15]

Preparations and impact

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Vietnam

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On July 15, meteorologists expected heavy rainfall from Talas.[16] The storm made landfall near Vinh at around 18:00 UTC on July 16 as a moderate tropical storm. Vietnam's National Center for Hydro-Meteorological Forecasting recorded wind gusts up to 100 km/h (62 mph), causing damage in Nghệ An, Thanh Hóa and Hà Tĩnh provinces.[13] Over 400 mm (16 in) of rain fell in the central and northern parts of the country in the two days before landfall, while the capital, Hanoi, received 100 mm (3.9 in).[17]

Talas caused 14 deaths; damaged around 3,000 homes;[18] and sank 50 boats.[17] Power lines in three provinces were damaged as a result of the storm.[19] The storm destroyed approximately 50,000 ha (123,555 acres) of vegetable fields,[17] 801 ha (1,980 acres) of aquaculture farms, and 47,632 ha (117,700 acres) of rice and subsidiary crops were.[20] The storm resulted in approximately 1.6 trillion Vietnamese đồng (approximately US$70.4 million).[21] The total cost of other damages was estimated at ₫2.52 trillion (US$109 million).[22] Damages in Nghệ An were reported to reach up to ₫993 billion (approximately US$43.7 million).[23]

The storm sank a coal ship late on July 16; only three of the thirteen people on board were rescued.[24] Seven people were injured in Quảng Bình province, where fishing boats also washed ashore on waves as high as 5 m (16 ft). The national guard rescued a boat carrying eight weather officials after the storm. On July 17, flooded streets and disrupted train services stranded more than 4,000 passengers in the capital. Railway services from Hanoi to Vinh were canceled while trains from Hanoi to Saigon were delayed by five to seven hours.[25] The storm caused multiple severe traffic jams,[where?] and capsized a ship,[where?] injuring seven people.[26] Eight flights were cancelled by the airline VietJet Air[27] and other airlines cancelled an additional ten.[28] In response to the storm, the Irrigation Department ordered every district to have an irrigation office[clarification needed] and/or adding pumps.[29]

Hainan

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On July 22, China's National Observatory issued a "blue alert"[clarification needed] to Hainan province and the Beibu Gulf. About 22,901 fishing boats were moved and 39,425 people working at sea farms were evacuated to Guangdong province.[16] As the storm neared the coast, winds of 62–74 km/h (39–46 mph) were recorded around the Lingshui Li Autonomous County.[30] Southern portions of the province received rainfall of 3–6 in (8–15 cm) and tourists were stranded on a remote island off the coast of Guangdong.[31] Total economic losses in Hainan Province reached 24 million Renminbi (approximately US$3.5 million)[32] and CN¥ 60 million (approximately US$8.8 million) in China overall.[33]

Other areas

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Laos, Myanmar and Thailand received strong winds and heavy rains. Rainfall increased in Thailand between 15 and 18 July, reaching a peak of 145 mm (5.7 in) on 17 July in the Phu Phiang district of Nan province.[34] Three districts flooded as a result of rivers overflowing in Nan province, including the Nan River.[35] The storm passed over the Laotian provinces of Xiangkhouang, Xaysomboun and Bolikhamsai early in the morning of 17 July. On that and the following day, the rain caused landslides and flash floods in areas of Central and Northern Laos.[36]

See also

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References

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  1. ^ "Significant Tropical Weather Advisory for the Western and South Pacific Oceans". Archived from the original on 23 May 2024.
  2. ^ "Warning and Summary 140600". Archived from the original on 23 May 2024.
  3. ^ "RSMC Tropical Cyclone Advisory TD". Japan Meteorological Agency. 14 July 2017. Archived from the original on 23 May 2024.
  4. ^ "RSMC Tropical Cyclone Advisory TS 1704 TALAS (1704) UPGRADED FROM TD". Japan Meteorological Agency. 15 July 2017. Archived from the original on 23 May 2024.
  5. ^ "Tropical Cyclone Formation Alert". Archived from the original on 23 May 2024.
  6. ^ "Tropical Depression 06W (Talas) Warning Nr 001". Joint Typhoon Warning Center. 15 July 2017. Archived from the original on 23 May 2024.
  7. ^ "Prognostic Reasoning for Tropical Depression 06W (Talas) Warning Nr 01". Joint Typhoon Warning Center. 15 July 2017. Archived from the original on 23 May 2024.
  8. ^ "Prognostic Reasoning for Tropical Storm 06W (Talas) Warning Nr 02". Joint Typhoon Warning Center. 15 July 2017. Archived from the original on 23 May 2024.
  9. ^ "Prognostic Reasoning for Tropical Storm 06W (Talas) Warning Nr 03". Joint Typhoon Warning Center. 16 July 2017. Archived from the original on 23 May 2024.
  10. ^ "RSMC Tropical Cyclone Advisory STS 1704 TALAS (1704) UPGRADED FROM TS". Japan Meteorological Agency. 16 July 2017. Archived from the original on 23 May 2024.
  11. ^ "Prognostic Reasoning for Tropical Storm 06W (Talas) Warning Nr 04". Joint Typhoon Warning Center. 16 July 2017. Archived from the original on 23 May 2024.
  12. ^ "RSMC Tropical Cyclone Advisory TS 1704 TALAS (1704) DOWNGRADED FROM STS". Japan Meteorological Agency. 16 July 2017. Archived from the original on 23 May 2024.
  13. ^ a b "Tropical Storm Talas (06W)". Rish Management Solutions, Inc. 17 July 2017. Archived from the original on 5 August 2017.
  14. ^ "Tropical Storm 06W (Talas) Warning Nr 006". Joint Typhoon Warning Center. 16 July 2017. Archived from the original on 23 May 2024.
  15. ^ "RSMC Tropical Cyclone Advisory TD 1704 TALAS (1704) DOWNGRADED FROM TS". Japan Meteorological Agency. 17 July 2017. Archived from the original on 23 May 2024.
  16. ^ a b "Tropical Storm "Talas" makes landfall over central Vietnam". The Watchers. 17 July 2017. Archived from the original on 8 April 2018. Retrieved 8 September 2024.
  17. ^ a b c "A tropical storm has left four dead, five missing in Vietnam". The China Post. 19 July 2017. Archived from the original on 19 July 2017. Retrieved 19 July 2017.
  18. ^ "Storm Talas kills 14 in Vietnam, destroys homes". The Straits Times. 19 July 2017. Archived from the original on 29 July 2017. Retrieved 19 July 2017.
  19. ^ baotintuc.vn (18 July 2017). "Hệ thống lưới điện hàng trăm xã bị ảnh hưởng do bão số 2" [The power grid system of hundreds of communes affected by storm No. 2]. baotintuc.vn (in Vietnamese). Retrieved 8 September 2024. [the remaining 3 lines in 3 provinces of Thanh Hoa, Nghe An, Ha Tinh are being damaged, the operation management units will fix them on July 17, 2017]
  20. ^ "One more body found from missing ship". Viet Nam News. 20 July 2017. Archived from the original on 6 August 2017. Retrieved 20 July 2017.
  21. ^ "Tổng cục Thống kê" [Socio-economic situation in the first seven months of 2017]. www.gso.gov.vn. Archived from the original on 21 September 2017. [If including 979.8 trillion VND of nearly 21.4 thousand enterprises changing to increase capital, the total registered capital added to the economy in 7 months of 2017 is 1,670.5 trillion VND.]
  22. ^ "TỔNG HỢP THIỆT HẠI DO THIÊN TAI NĂM 2017" (PDF). Vietnamese Government. Retrieved 21 March 2024.
  23. ^ "Storm-ravaged Vietnamese province closes beaches with Sonca bearing down". VN Express. 25 July 2017. Archived from the original on 28 August 2017. Retrieved 28 July 2017.
  24. ^ "Tropical Storm Talas hits Vietnam, leaves one dead". The Gulf Today. 17 July 2017. Archived from the original on 17 July 2017. Retrieved 20 July 2017.
  25. ^ "Storm Talas leaves path of destruction in Vietnam's central provinces". Nhân Dân. 17 July 2017. Archived from the original on 12 November 2019.
  26. ^ "9 dead or missing in Vietnam as infrastructure is damaged". VnExpress. 17 July 2017. Archived from the original on 9 September 2024. Retrieved 25 August 2024.
  27. ^ baotintuc.vn (16 July 2017). "Vietjet dừng 8 chuyến bay đi/đến Bắc Trung Bộ do ảnh hưởng bởi bão Talas" [Vietjet stopped 8 flights to/from North Central Vietnam due to the impact of Typhoon Talas]. baotintuc.vn (in Vietnamese). Archived from the original on 8 September 2024. Retrieved 8 September 2024. [Specifically, flights VJ250 (Ho Chi Minh City – Thanh Hoa), VJ249 (Thanh Hoa – Ho Chi Minh City), VJ218, VJ220 (Ho Chi Minh City – Vinh), VJ219, VJ221 (Vinh – Ho Chi Minh City), VJ264 (Ho Chi Minh City – Dong Hoi), VJ265 (Dong Hoi – Ho Chi Minh City) had to stop operating. In addition, many other flights were also affected by the chain.]
  28. ^ baotintuc.vn (16 July 2017). "Không khai thác 10 chuyến bay do ảnh hưởng của bão số 2" [Not operating 10 flights due to the impact of Typhoon No. 2]. baotintuc.vn (in Vietnamese). Archived from the original on 8 September 2024. Retrieved 8 September 2024. [On July 16, Vietnam Airlines (VNA), Jetstar Pacific (JPA) and VASCO (0V) announced that, due to the impact of Typhoon No. 2 (Talas) in the North Central provinces, to ensure flight safety, airlines will not operate 10 flights in the evening of July 16.]
  29. ^ "Irrigation Dept follows up on water situation in Sukhothai - Thailand | ReliefWeb". reliefweb.int. 25 July 2017. Retrieved 25 August 2024.
  30. ^ "Typhoon Talas to hit south China, 20,000 boats moored at bay". Xinhua. 16 July 2017. Archived from the original on 15 July 2017.
  31. ^ "Stranded Tourists Rescued From China Island as Tropical Storm Talas Approaches". The Weather Channel. 16 July 2017. Archived from the original on 12 February 2018. Retrieved 20 July 2017.
  32. ^ "海南部分地区遭受台风灾害" [Some areas of Hainan were hit by typhoons]. 中华人民共和国民政部. 17 July 2017. Archived from the original on 4 December 2017. Retrieved 3 December 2017. [on July 17, 135,000 people were affected in four districts of Sanya City, including Jiyang, Haitang and Tianya, and five counties (cities) such as Qionghai, Wenchang and Lingao, and 33,000 people were urgently relocated, 21,000 hectares of crops were affected, and more than 2,400 yuan of direct economic losses were lost.]
  33. ^ "MEMBER REPORT [China]" (PDF). Typhoon Commitee. 30 October 2017. p. 5. Archived (PDF) from the original on 17 December 2017. Retrieved 14 September 2024.
  34. ^ "Member Report Thailand" (PDF). Typhoon Committee. 3 November 2017. pp. 1–2. Archived (PDF) from the original on 11 September 2024. Retrieved 11 September 2024.
  35. ^ "Thailand: Tropical storm Talas causes flooding in North - Thailand | ReliefWeb". reliefweb.int. 18 July 2017. Archived from the original on 18 July 2017. Retrieved 25 August 2024.
  36. ^ "Member Report Lao PDR" (PDF). Typhoon Committee. 3 November 2017. pp. 2–3. Archived (PDF) from the original on 11 September 2024. Retrieved 11 September 2024.
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