Tropical Depression 18W (2013)

Tropical Depression 18W was a tropical depression that impacted Vietnam, Laos and Thailand during mid September 2013. The system was first noted as a tropical depression on September 16, 2013, while it was located within the South China Sea to the south east of Hanoi in Vietnam. Over the next two days the system gradually developed further, before it was reported by the Vietnamese National Centre for Hydro Meteorological Forecasting that the system had developed into their eighth tropical storm of 2013. However, other meteorological agencies did not report that the system had developed into a tropical storm.

Tropical Depression 18W
Tropical depression (JMA scale)
Tropical depression (SSHWS)
Tropical Depression 18W on September 18
FormedSeptember 16, 2013
DissipatedSeptember 21, 2013
Highest winds10-minute sustained: 55 km/h (35 mph)
1-minute sustained: 45 km/h (30 mph)
Lowest pressure996 hPa (mbar); 29.41 inHg
Fatalities23 dead, 12 missing[1][2][3]
Damage$79.7 million (2013 USD)
Areas affectedVietnam, Laos, Thailand
Part of the 2013 Pacific typhoon season

In Vietnam, flooding triggered by the storm killed at least seven people and 5,000 homes were damaged or destroyed. Severe flooding took place in neighboring Laos where at least 10,000 structures were damaged and losses reached $61 million (United States dollars).

Meteorological history
Map plotting the track and the intensity of the storm, according to the Saffir–Simpson scale

On September 16, the Japan Meteorological Agency (JMA) and the Vietnamese National Centre for Hydro Meteorological Forecasting (VNCHMF) reported that a tropical depression had developed within an area of low to moderate vertical windshear, about 1,000 km (620 mi) to the southeast of Hà Nội, Vietnam.[4][5][6] Over the next two days the depression gradually developed further as it moved westwards, before the VNCHMF reported during September 17, that the system had developed into their eighth tropical storm of the season.[7][8] Later that day as vertical windshear over the system decreased slightly, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert.[9] During the next day after the depressions low level circulation center had started to consolidate, the JTWC initiated advisories and designated the system as Tropical Depression 18W.[10] During that day the system moved westwards along the southern edge of the subtropical ridge of high pressure, before the JTWC issued its final warning on the system later that day after the depression had made landfall on Vietnam, near the port city of Da Nang.[8][10][11] Over the next couple of days the system continued to move westwards and moved through Vietnam, Laos and Thailand, before it was last noted on September 21 over the Thai province of Phetchabun.[12]

Impact

Vietnam

On September 17, one of the deputy prime ministers of Vietnam Hoàng Trung Hải, asked the Central Committee for Flood and Storm Control and the National Committee for Search and Rescue, to be prepared for the system impacting Vietnam.[13] He also asked local authorities and border guards to call on vessels, between Quang Binh and Phu Yen provinces to take shelter and evacuate people in vulnerable areas to higher places.[13] Several ministries and agencies were tasked to inspect the safety of dams and reservoirs in response to possible flooding.[13]

During September 18, the system made landfall on Vietnam with provinces from Thừa Thiên–Huế and Quảng Nam provinces affected by a moderate rain, heavy rain and flooding[14][1]

Storm and rain storm caused the provinces of Khanh Hoa to Nghe An and north west Highlands, along with a flood to 10 dead and 12 missing, 6 wounded.[1]Đắk Lắk Province suffered the worst of people and property, with 5 dead and 7 missing.[15] More than 2,000 home houses were flooded, 2,100 households in Ea Sup district emergency relocation. Thousands of hectares of rice and crops damaged. Many roads were flooded Ea Sup districts of fragmentation in some areas.[16]

In Hà Tĩnh, due to the storm, in Hà Tĩnh heavy rain, wind tugging at category 6 to 7 of Beaufort scale and tornadoes cause more damage to the people. The total damage caused by a tornado more than VND 500 million (US$24,000).[17] In Nghe An, 13 people killed by floods, total damage reached VND 392 billion (US$18.6 million).[3] In Nam Dong (Thua Thien Hue Province), the total damage caused about VND 1.9 billion (US$90,000).[18]

In Da Nang and Quảng Nam Province, Department of Education and Training at two local students have to leave school to avoid the storm.[19]

Other areas

Within Laos severe flooding was reported with at least 10,000 structures damaged and economic losses reaching $61 million.[2] The depression also produced heavy rainfall, within north-eastern, central and eastern parts of Thailand.[20] Flash flooding was reported within the provinces of Kamphang Phet, Tak, Nan, Phetchabun, Phitsanulok, Khon Kaen, Ubon Ratchathani, Surin, Si Sa Ket, Nakhon Ratchasima, Amnat Charoen, Buri Ram, Nakhon Sawan, Lop Buri, Kanchanaburi, Sa Kaeo, Prachin Buri and Nakhon Nayok.[20]

Aftermath

Most of all weather stations (except stations Vietnam) said that it was a tropical depression, not the storm on its release and only Vietnam recognizes it is a storm and the storm on its release.[21][22][23]

Mr. Bui Minh Tang confirms Da Nang city for the entire school students after the storm ends because of the Center's newsletter afternoon September 18 is reasonable, because this time there's heavy rain, but on 19 September is back to school "bit careful".[22][23][24]

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See also

References
  1. Khanh Hoan — Nguyen Dung (September 22, 2013). "10 người chết, 12 người mất tích do bão lũ (10 dead, 12 missing as storm and floods)". ThanhNien Daily (in Vietnamese). Archived from the original on November 1, 2013. Retrieved November 13, 2013.
  2. September 2013 Global Catastrophe Recap (PDF) (Report). AON Benefield. October 10, 2013. Retrieved October 25, 2013.
  3. Nguyen Duy (September 24, 2013). "Nghệ An: 13 người chết do mưa lũ, thiệt hại gần 400 tỷ đồng (Nghe An: 13 people killed by floods, nearly 400 billion dong losses)". Dan Tri (in Vietnamese). Retrieved November 22, 2013.
  4. RSMC Tokyo — Typhoon Center (September 16, 2013). "RSMC Tropical Cyclone Advisory September 16, 2013 06z". Japan Meteorological Agency. Archived from the original on September 20, 2013. Retrieved October 28, 2013.
  5. Joint Typhoon Warning Center (September 16, 2013). "Significant Tropical Weather Advisory for the Western and South Pacific Oceans September 16, 2013 06z". United States Navy, United States Air Force. Archived from the original on September 20, 2013. Retrieved October 28, 2013.
  6. Thu, Hương (September 16, 2013). "Áp thấp nhiệt đới trên biển Đông" [Tropical depression in the South China Sea]. Báo điện tử Vn Express (in Vietnamese). Retrieved November 11, 2013.
  7. "Áp thấp đã mạnh lên thành bão, gió giật cấp 9, 10" (in Vietnamese). Tuoitre Online. September 17, 2013. Retrieved November 11, 2013.
  8. Vietnamese National Center for Hydro Meteorological Forecasts (December 11, 2013). Member Report: Vietnam (PDF). ESCAP/WMO Typhoon Committee: 8th Integrated Workshop/2nd TRCG Forum. ESCAP/WMO Typhoon Committee. Archived (PDF) from the original on December 12, 2013. Retrieved December 11, 2013.
  9. Joint Typhoon Warning Center (September 17, 2013). "Tropical Cyclone Formation Alert September 17, 2013 21z". United States Navy, United States Air Force. Archived from the original on October 28, 2013. Retrieved October 28, 2013.
  10. Joint Typhoon Warning Center (September 18, 2013). "Prognostic Reasoning for Tropical Depression 18W Warning Nr 1". United States Navy, United States Airforce. Archived from the original on September 20, 2013. Retrieved October 28, 2013.
  11. Joint Typhoon Warning Center (September 18, 2013). "Tropical Depression 18W Warning Nr 3". United States Navy, United States Air Force. Archived from the original on September 20, 2013. Retrieved October 28, 2013.
  12. Young, Steve (October 28, 2013). "Global Tropical System Tracks — September 2013". Australian Severe Weather. Archived from the original on October 28, 2013. Retrieved October 28, 2013.
  13. Anh, Kim. "Gov't braces for eighth tropical storm". Online Newspaper of the Government of the Socialist Republic of Vietnam. Archived from the original on November 16, 2013. Retrieved November 16, 2013.
  14. "Tin cuối cùng về cơn bão số 8 (Information about the storm number 8". Voice of Vietnam (in Vietnamese). September 19, 2013. Retrieved November 7, 2013.
  15. Bão số 8: Miền Trung - Tây Nguyên gánh thêm nhiều tổn thất! Infonet.(in Vietnamese). Retrieved in November 7, 2013.
  16. Ha Quynh (September 20, 2013). "Bão số 8 gây thiệt hại lớn". An ninh thủ đô (in Vietnamese. Retrieved November 7, 2013.
  17. Thien Thu, Le Trinh (September 20, 2013). "Bão số 8 oanh tạc, 3.000 ngôi nhà chìm, 2 tàu cá mất tích, 2 người tử vong". An Ninh Thủ đô Daily (in Vietnamese). Retrieved November 7, 2013.
  18. Nam Đông: Bão số 8 gây thiệt hại gần 2 tỷ đồng (Nam Dong: The 8th Storm damages nearly 2 billion dong) Song Huong Magazine.
  19. B.Van (September 18, 2013). "Học sinh Đà Nẵng, Quảng Nam nghỉ học ngày 19-9". Nguoi Lao Dong Daily (in Vietnamese). Retrieved November 7, 2013.
  20. Thailand Meteorological Department (November 28, 2013). Member Report: Thailand (PDF). ESCAP/WMO Typhoon Committee: 8th Integrated Workshop/2nd TRCG Forum. ESCAP/WMO Typhoon Committee. p. 9. Archived from the original (PDF) on November 29, 2013. Retrieved November 29, 2013.
  21. Miền Trung lo lu lớn do bão số 8 ANTD (in Vietnamese).Retrieved in November 7, 2013.
  22. Nguyen Hoai (September 21, 2013). "Không dự báo sai cơn bão số 8". TienPhong Daily (in Vietnamese). Retrieved November 7, 2013.
  23. Huong Thu (September 21, 2013). "'Chúng tôi dự báo bão không sai nhưng địa phương hơi cẩn thận'". VnExpress (in Vietnamese). Retrieved November 7, 2013.
  24. Minh Quan (September 21, 2013). "Diễn biến bão số 8 bị dự đoán Sai?". VTC (in Vietnamese). Retrieved September 21, 2013.
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