Typhoon Damrey (2017)

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This article is about the 2017 typhoon. For other storms of the same name, see List of storms named Damrey and List of storms named Ramil.

Typhoon Damrey (Ramil)
Typhoon Damrey approaching Vietnam on November 3
Meteorological history
FormedOctober 31, 2017
DissipatedNovember 4, 2017
Typhoon
10-minute sustained (JMA)
Highest winds130 km/h (80 mph)
Lowest pressure970 hPa (mbar); 28.64 inHg
Category 2-equivalent typhoon
1-minute sustained (SSHWS/JTWC)
Highest winds165 km/h (105 mph)
Lowest pressure967 hPa (mbar); 28.56 inHg
Overall effects
Fatalities142 total
Damage$1 billion (2017 USD)
(Third-costliest in Vietnamese history)
Areas affectedPhilippines, Vietnam, Cambodia, Thailand
IBTrACSEdit this at Wikidata
Part of the 2017 Pacific typhoon season

Typhoon Damrey, known in the Philippines as Severe Tropical Storm Ramil, was a strong tropical cyclone that affected the Philippines and Vietnam during early-November 2017. Damrey first originated as a tropical depression over the Philippine archipelago of Visayas on October 31. Emerging into the South China Sea a few days later, the system strengthened into the second deadliest and twenty-third named storm of the 2017 Pacific typhoon season. Rapidly intensifying, Damrey became the season's tenth typhoon on November 3, reaching its peak intensity as a Category 2 on the same day. Damrey made landfall over Khánh Hoà, Vietnam on November 4 and began to rapidly weaken, fully dissipating on November 5.

Strong winds, heavy rainfall and severe flooding in Central Vietnam caused by the typhoon killed 142 people and total damage reached over 22 trillion VND (US$1 billion).[1] Damrey made landfall in central Vietnam as the region hosted the 2017 APEC Summit in Da Nang.

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

On October 31, the Japan Meteorological Agency (JMA) began monitoring a weak tropical depression located approximately 349 km (217 mi) to the west of Cebu.[2] Six hours later, the JMA began issuing advisories on the system after winds near its center had reached about 55 km/h (35 mph).[3] By about 21:00 UTC of the same day, the PAGASA had classified the system as a tropical depression, assigning the local name Ramil.[4] Around the same time, the Joint Typhoon Warning Center (JTWC) had issued a Tropical Cyclone Formation Alert on the system.[5]

By November 1, the JTWC had classified Ramil as a tropical depression, giving the international designation of 28W,[6] after convection around its low-level circulation center (LLCC) began to consolidate.[7] Thereafter, on November 2, the JMA upgraded the system to a tropical storm, receiving the name Damrey after it left the Philippine Area of Responsibility, becoming the twenty-third named storm of the season.[8] After the system entered a favorable environment for intensification, including continuous convective organization, the JTWC followed suit on upgrading it to a tropical storm.[9] Satellite imagery later depicted deep convective banding wrapping its LLCC, which caused Damrey to further strengthen.[10] By 18:00 UTC of the same day, Damrey had strengthened into a severe tropical storm on the JMA scale.[11] Shortly thereafter, the structure of the storm had become more symmetric, with much deeper convection and an improved radial outflow. Vertical wind shear was also very low at around 5 knots, which was favorable for intensification.[12]

The JMA upgraded Damrey to a typhoon early on November 3.[13] Three hours later, the JTWC followed suit and classified it as a Category 1-equivalent typhoon,[14] after animated satellite imagery depicted a "strengthening" system and a well-defined circular eye like feature.[15] At this stage, Damrey was located in conditions of low shear and warm sea-surface temperatures of 27–28 °C (81–82 °F) with good outflow.[16] The JMA had already declared that Damrey reached its peak intensity with 10-minute sustained winds of 130 km/h (80 mph) and a minimum barometric pressure of 970 hPa.[17] The lowest sea-level pressure value recorded at the Nha Trang weather station was 982.1 hPa.[18] Six hours later, microwave images showed the eye becoming well-defined and an improved storm structure with a large centralized convective mass occluding to its center.[19] By 21:00 UTC, the JTWC upgraded Damrey to a Category 2-equivalent typhoon, reaching its peak strength with 1-minute sustained winds of 165 km/h (105 mph).[20] The JTWC issued their final advisory on the typhoon on 03:00 UTC on November 4, as it made landfall in Vạn Ninh District, Khánh Hòa Province, Vietnam. While over land, its convective structure began to deteriorate,[21] and three hours later the JMA downgraded Damrey to a severe tropical storm,[22] then to a tropical storm.[23] The JMA issued their final advisory on 12:00 UTC on November 4.[24] The agency continued to track the system as it fully dissipated on 00:00 UTC on November 5.[25]

Preparations and impact

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Deaths and damage from Typhoon Damrey
Countries Casualties Damage
(2017 USD) 		Ref
Dead Injured
Philippines 8 $20,000 [26][27]
Vietnam 107 342 $1 billion [28]
Cambodia 1
Totals: 116 342 $1 billion
Costliest tropical cyclones in Vietnam
Rank Storm Season Damage Ref.
VND USD
1 Yagi 2024 84.5 trillion $3.47 billion [29]
2 Bualoi 2025 23.9 trillion $950 million [30]
3 Damrey 2017 22.7 trillion $1 billion [31]
4 Matmo 2025 19.5 trillion $776 million [30]
5 Doksuri 2017 18.4 trillion $809 million [31]
6 Ketsana 2009 16.1 trillion $949 million [32]
7 Wutip 2013 13.6 trillion $648 million [33]
8 Molave 2020 13.3 trillion $573 million [34]
9 TD 23W 2017 13.1 trillion $579 million [31]
10 Kalmaegi 2025 13 trillion $519 million [35]

Philippines

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On October 31, the PAGASA had raised a Tropical Cyclone Warning Signal #1, the lowest of five, to a few provinces, mostly over Western Visayas (Region VI) and the island of Palawan.[36] PAGASA had also warned residents of risky sea travel over the areas raised by the signal warning, including northern and eastern seaboards of Luzon.[37] Some domestic flights were canceled and trips to and from the Batangas Port were canceled during November 1.[38] Estimated rainfall around the 200 km radius of the system was classified from moderate to occasionally heavy.[39]

The National Disaster Risk Reduction and Management Council (NDRRMC) stated that 305 people had evacuated in the provinces of Camarines Norte, Camarines Sur and in Mindoro, while some 1,938 people were stranded in ports over in Palawan and Batangas.[27] Eight domestic flights were canceled on November 2 while the PAGASA suspended work and classes that day.[27] 14 landslides were recorded in the province of Camarines Sur, killing one person.[40] Three students also died in Busuanga, Palawan after drowning in a river.[41] One road and four bridges were also affected and not passable in the Cagayan Valley.[41] On November 4, the total number of fatalities rose to 8.[27] Torrential rains caused by the storm resulted in 2.5 ft of deep flooding, damaging agricultural crops. Agricultural damages were totaled to Php1.03 million (US$20,000) over in the city of Aurora Quezon on November 4.[26]

Vietnam

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Due to the impact of Typhoon Damrey, sustained winds of 24 m/s (86 km/h)were recorded in M’Drăk, Đắk Lắk Province.[42] Gusts of force 12 on the Beaufort scale were recorded in some areas of Khánh Hòa Province, such as gusts of 33 m/s (118 km/h) in Nha Trang and 34 m/s (122 km/h) in Ninh Hòa.[43]

By November 8, at least 106 people had been killed in Vietnam as a result of the typhoon, with 197 others injured and 25 missing.[44] Widespread flooding was reported, with more than 300,000 homes having been destroyed or damaged. UNICEF estimated at least four million people had been directly impacted by the storm and were in need of support.[44][45][46][47] The beach resort of Nha Trang was among the worst hit areas, 30,000 inhabitants and tourists had to be evacuated from the area.[48][49] Damage by Damrey in Vietnam was estimated at 22.68 trillion đồng (US$1 billion, 2017 USD), and mostly in Khánh Hòa province (14.7 trillion đồng, US$647 million, 2017 USD).[50][31]

Typhoon Damrey was referenced in the U.S. President Donald Trump's statement at APEC 2017.[51] The Russian President Vladimir Putin gave US$5 million in relief funds due to the typhoon's severe damage in Vietnam.[52]

See also

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References

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  1. ^ "Thiệt hại do thiên tai gây ra lên đến 53.200 tỷ đồng". November 29, 2017.
  2. ^ "Warning and summary". www.webcitation.org. Archived from the original on May 23, 2024. Retrieved November 12, 2017.
  3. ^ "RSMC Tropical Cyclone Advisory TD". Japan Meteorological Agency. October 31, 2017. Archived from the original on May 23, 2024.
  4. ^ "LPA turns into Tropical Depression Ramil; Signal No. 1 up over 3 areas". GMA News. October 31, 2017.
  5. ^ "Typhoon WRNCEN Pearl Harbor HI". www.webcitation.org. Archived from the original on May 23, 2024. Retrieved November 12, 2017.
  6. ^ "Tropical Depression 28W (Twenty-eight) Warning Nr 001". Joint Typhoon Warning Center. November 1, 2017. Archived from the original on May 23, 2024.
  7. ^ "Prognostic Reasoning for Tropical Depression 28W (Twenty-eight) Warning Nr 01". Joint Typhoon Warning Center. November 1, 2017. Archived from the original on May 23, 2024.
  8. ^ "RSMC Tropical Cyclone Advisory TS 1723 DAMREY (1723) UPGRADED FROM TD". Japan Meteorological Agency. November 2, 2017. Archived from the original on May 23, 2024.
  9. ^ "Prognostic Reasoning for Tropical Storm 28W (Twenty-eight) Warning Nr 02". Joint Typhoon Warning Center. November 2, 2017. Archived from the original on May 23, 2024.
  10. ^ "Prognostic Reasoning for Tropical Storm 28W (Damrey) Warning Nr 04". Joint Typhoon Warning Center. November 2, 2017. Archived from the original on May 23, 2024.
  11. ^ "RSMC Tropical Cyclone Advisory STS 1723 DAMREY (1723) UPGRADED FROM TS". Japan Meteorological Agency. November 2, 2017. Archived from the original on May 23, 2024.
  12. ^ "Prognostic Reasoning for Tropical Storm 28W (Damrey) Warning Nr 05". Joint Typhoon Warning Center. November 2, 2017. Archived from the original on May 23, 2024.
  13. ^ "RSMC Tropical Cyclone Advisory TY 1723 DAMREY (1723) UPGRADED FROM STS". Japan Meteorological Agency. November 3, 2017. Archived from the original on May 23, 2024.
  14. ^ "Typhoon 28W (Damrey) Warning Nr 06". Joint Typhoon Warning Center. November 3, 2017. Archived from the original on May 23, 2024.
  15. ^ "Prognostic Reasoning for Tropical Storm 28W (Damrey) Warning Nr 06". Joint Typhoon Warning Center. November 3, 2017. Archived from the original on May 23, 2024.
  16. ^ "Prognostic Reasoning for Typhoon 28W (Damrey) Warning Nr 07". Joint Typhoon Warning Center. November 3, 2017. Archived from the original on May 23, 2024.
  17. ^ "RSMC Tropical Cyclone Advisory TY 1723 DAMREY (1723)". Japan Meteorological Agency. November 3, 2017. Archived from the original on May 23, 2024.
  18. ^ "Nghiên cứu dự báo dựa trên tác động của cơn bão Damrey đến thành phố Nha Trang tỉnh Khánh Hòa" [A Study on Storm Forecasting Based on the Impact of Typhoon Damrey in Nha Trang, Khánh Hoà Province] (in Vietnamese). Journal of Hydro-Meteorology. September 18, 2023. p. 62. Retrieved October 17, 2025.
  19. ^ "Prognostic Reasoning for Typhoon 28W (Damrey) Warning Nr 08". Joint Typhoon Warning Center. November 3, 2017. Archived from the original on May 23, 2024.
  20. ^ "Typhoon 28W (Damrey) Warning Nr 009". Joint Typhoon Warning Center. November 3, 2017. Archived from the original on May 23, 2024.
  21. ^ "Typhoon 28W (Damrey) Warning Nr 010". Joint Typhoon Warning Center. November 4, 2017. Archived from the original on May 23, 2024.
  22. ^ "RSMC Tropical Cyclone Advisory STS 1723 DAMREY (1723) DOWNGRADED FROM TY". Japan Meteorological Agency. November 4, 2017. Archived from the original on May 23, 2024.
  23. ^ "RSMC Tropical Cyclone Advisory TS 1723 DAMREY (1723) DOWNGRADED FROM STS". Japan Meteorological Agency. November 4, 2017. Archived from the original on May 23, 2024.
  24. ^ "RSMC Tropical Cyclone Advisory TD DOWNGRADED FROM TS 1723 DAMREY (1723)". Japan Meteorological Agency. November 4, 2017. Archived from the original on May 23, 2024.
  25. ^ "Warning and summary". www.webcitation.org. Archived from the original on May 23, 2024. Retrieved November 12, 2017.
  26. ^ a b Jason De Asis (November 4, 2017). "Ramil-triggered floods damage P1-M agri crops in Baler". Philippine Canadian Inuirer.
  27. ^ a b c d Francis T. Wakefield (November 4, 2017). "8 dead from latest storm". Press Reader.
  28. ^ 2017 VIETNAM Report
  29. ^ "TỔNG HỢP THIỆT HẠI DO THIÊN TAI TỪ NĂM 2024" (PDF). Vietnamese Department of Dyke Management and Flood Control (in Vietnamese). Archived (PDF) from the original on August 1, 2025. Retrieved August 1, 2025.
  30. ^ a b Nguyễn Hoài (November 29, 2025). "Biển Đông nhiều bão kỷ lục". Báo Tiền phong (in Vietnamese). Retrieved November 29, 2025.
  31. ^ a b c d Tổng hợp thiệt tại do thiên tai năm 2017 (PDF) (in Vietnamese), Vietnam Disaster and Dyke Management Authority, archived from the original (PDF) on February 6, 2025
  32. ^ Tổng hợp thiệt hại năm 2009 (PDF) (in Vietnamese), Vietnam Disaster and Dyke Management Authority, archived from the original (PDF) on September 2, 2024
  33. ^ Tổng hợp thiệt hại do thiên tai năm 2013 (PDF) (in Vietnamese), Vietnam Disaster and Dyke Management Authority, archived from the original (PDF) on February 6, 2025
  34. ^ Báo cáo thiệt hại tính tới tháng 11 năm 2020 (in Vietnamese), Vietnam Disaster and Dyke Management Authority, archived from the original on January 20, 2025
  35. ^ Including:
  36. ^ "5 areas under storm signals due to Tropical Depression Ramil". October 31, 2017. Retrieved November 1, 2017.
  37. ^ Frances Mangosing (November 1, 2017). "Tropical Depression 'Ramil' slightly intensifies". Inquirer.
  38. ^ Kristine J Patag (November 1, 2017). "Flights, trips canceled due to Tropical Depression Ramil". Philstar.
  39. ^ "DSWD DROMIC Preparedness for Response Report #1 on Tropical Depression "RAMIL"" (PDF). Department of Social Welfare and Development. November 1, 2017.
  40. ^ Frank Peñones Jr. (November 2, 2017). "Villager killed in CamSur landslide". Manila Times.
  41. ^ a b Dempsey Reyes (November 2, 2017). "3 students drown in Palawan". Manila Times.
  42. ^ "ĐẶC ĐIỂM HOẠT ĐỘNG CỦA XOÁY THUẬN NHIỆT ĐỚI Ở TÂY BẮC THÁI BÌNH DƯƠNG, BIỂN ĐÔNG VÀ ĐỔ BỘ VÀO VIỆT NAM NĂM 2017" [CHARACTERISTICS OF TROPICAL CYCLONE ACTIVITY IN THE NORTHWEST PACIFIC, THE EAST SEA (SOUTH CHINA SEA), AND LANDFALLS IN VIETNAM IN 2017]. Tạp chí Khoa học Việt Nam Trực tuyến (in Vietnamese). Viện Khoa học Khí tượng Thủy Văn & Biến đổi khí hậu. March 3, 2018. Retrieved April 20, 2025.
  43. ^ Võ Anh Kiệt (November 22, 2017). "Cần nâng cao ý thức tự giác phòng, chống thiên tai". Khánh Hòa Online. Retrieved October 16, 2025.
  44. ^ a b "Typhoon Damrey damage: Vietnam wrecked by strongest deadly typhoon in 16 years – 106 dead". The Daily Express. November 8, 2017 – via www.express.co.uk.
  45. ^ "Death toll from Vietnam storm tops 60 and dams near bursting". Reuters. November 6, 2017 – via www.voanews.com.
  46. ^ "Typhoon death toll surges to 89, 18 missing in central Vietnam". Xinhua. November 8, 2017. Archived from the original on November 8, 2017.
  47. ^ "Typhoon Damrey Kills At Least 49 People in Vietnam". Voice of America. November 6, 2017 – via www.voanews.com.
  48. ^ "Dozens dead as typhoon lashes Vietnam". BBC. November 5, 2017.
  49. ^ News, Vietnamnet. "27 người chết do bão: TƯ vào cuộc, địa phương chủ quan?". VietNamNet. {{cite web}}: |last1= has generic name (help)
  50. ^ "Kêu gọi hỗ trợ khắc phục hậu quả bão số 12 ở một số tỉnh miền Trung". December 14, 2017.
  51. ^ VnExpress. "Toàn văn bài phát biểu của Tổng thống Trump tại APEC – VnExpress". Tin nhanh VnExpress (in Vietnamese). Retrieved November 12, 2017.
  52. ^ "Nga chuyển 5 triệu USD giúp đỡ Việt Nam khắc phục hậu quả bão số 12". VOV – ĐÀI TIẾNG NÓI VIỆT NAM. November 8, 2017. Retrieved November 12, 2017.
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