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Tropical Storm Prapiroon (2024)

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This article is about the 2024 typhoon. For other storms of the same name, see List of storms named Prapiroon and List of storms named Butchoy.

Severe Tropical Storm Prapiroon (Butchoy)
Prapiroon at peak intensity, approaching Vietnam on July 22
Meteorological history
FormedJuly 20, 2024
DissipatedJuly 25, 2024
Severe tropical storm
10-minute sustained (JMA)
Highest winds100 km/h (65 mph)
Lowest pressure985 hPa (mbar); 29.09 inHg
Tropical storm
1-minute sustained (SSHWS/JTWC)
Highest winds110 km/h (70 mph)
Lowest pressure985 hPa (mbar); 29.09 inHg
Overall effects
Fatalities23 total
Missing9
Damage$32.9 million (2024 USD)
Areas affectedPhilippines, Vietnam, South China (particularly Hainan and Guangxi), Laos, Thailand, Cambodia
IBTrACSEdit this at Wikidata
Part of the 2024 Pacific typhoon season

Severe Tropical Storm Prapiroon, known in the Philippines as Tropical Depression Butchoy was a compact tropical cyclone that made landfall in Hainan and Vietnam in July 2024. It was the fourth named storm of the annual typhoon season. Prapiroon was first identified as an area of persistent convection southeast of Manila, Philippines, on July 15. Several days later, the low-pressure system crossed into the South China Sea. As the storm progressed northwestward along the southern edge of a mid-level subtropical ridge, it intensified into a tropical storm and was named Prapiroon by the Japan Meteorological Agency (JMA) around 00:00 UTC on July 21. However, a few hours later, wind shear and dry air entrainment began to affect the storm. Despite this, deep convection continued to build around the center over the next six hours, resulting in a compact system as it approached Hainan. Prapiroon made landfall near Wanning, Hainan, with winds of 95 km/h (60 mph). After making landfall, the storm maintained its well-defined eye while moving across central Hainan, leading the JMA to upgrade it to a severe tropical storm at 00:00 UTC on July 23. On July 22, the JMA estimated peak 10-minute sustained winds of 100 km/h (65 mph) and a minimum barometric pressure of 985 hPa (29.09 inHg). Despite having persistent deep convection over its center earlier, Prapiroon soon encountered high wind shear and a dry environment. By the same day, it made its second landfall in Quảng Ninh, Vietnam, becoming the first tropical cyclone to strike Vietnam in 640 days. The JMA indicated that the storm dissipated, marking the end of Prapiroon's time as a tropical cyclone on July 25.

Together with Typhoon Gaemi, Prapiroon and its precursor affected the southwest monsoon over the Philippines, leading to significant rainfall across parts of the archipelago as Prapiroon began to move away. In China, twelve counties and cities on the island received rainfall over 100 mm (3.9 in). The remnants of Prapiroon also caused heavy monsoonal rains in parts of Thailand and Cambodia. Overall, the tropical storm was responsible for 23 deaths, 9 missing, and US$32.9 million in damage.

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

The origins of Severe Tropical Storm Prapiroon can be traced back to July 15, when the Joint Typhoon Warning Center (JTWC) reported an area of convection roughly 623 km (385 mi) southeast of Manila, Philippines. At that time, the disturbance was in a favorable environment for development, with warm 29–30 °C (84–86 °F), sea surface temperatures, low wind shear and good equatorial outflow.[1] At 00:00 UTC the same day, the Japan Meteorological Agency (JMA) designated the system as a low-pressure area.[2] Several days later, the low crossed into the South China Sea.[3] On July 19, the JTWC gave a tropical cyclone formation alert to the disturbance, citing a high chance of development.[4] At 21:00 UTC that day, the JTWC began issuing advisories on the system, classifying it as Tropical Depression 04W after convective bands had wrapped around a partially exposed low-level circulation center.[5] The Philippine Atmospheric, Geophysical and Astronomical Services Administration declared the system a tropical depression a few hours later. Since the storm formed within the Philippine Area of Responsibility, the agency named it Butchoy.[6] The following day, the JMA designated it as a tropical depression.[7] As the storm progressed northwestward along the southern edge of a mid-level subtropical ridge, it intensified into a tropical storm and was named Prapiroon by the JMA around 00:00 UTC on July 21;[8] however, a few hours later, wind shear and dry air entrainment began to affect the storm, yet deep convection continued to build around the center over the next six hours, resulting in a compact system as it approached Hainan.[9][10]

A nascent eye feature became visible on microwave satellite imagery, while the associated central dense overcast grew more intense and displayed convective banding features.[11] Around 16:00 UTC, the center of Prapiroon made landfall near Wanning, Hainan, with winds of 95 km/h (60 mph).[11] After making landfall, the storm maintained its well-defined eye while moving across central Hainan,[12] leading the JMA to upgrade it to a severe tropical storm at 00:00 UTC on July 23.[13] On July 22, the JMA estimated peak 10-minute sustained winds of 100 km/h (65 mph) and a minimum barometric pressure of 985 hPa (29.09 inHg).[14] Despite having persistent deep convection over its center earlier, Prapiroon soon encountered high wind shear and a dry environment,[15] and by 6:30 a.m. local time that same day, it made its second landfall in Quảng Ninh, Vietnam,[16] becoming the first tropical cyclone to strike Vietnam in 640 days.[17] During the 2023 season, no tropical cyclone had made landfall in mainland Vietnam, making it the third instance since the country's independence, following the 1976 and 2002 seasons.[18][19] After the system moved inland, the JTWC ceased monitoring it as a tropical cyclone at 18:00 UTC on July 24.[20] The JMA indicated that the storm dissipated, marking the cessation of Prapiroon's time as a tropical cyclone the following day.[14]

Preparations and impact

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Philippines

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Along with Typhoon Gaemi (Carina), Prapiroon and its precursor influenced the southwest monsoon over the Philippines, producing heavy rainfall over parts of the archipelago from July 12 through July 20, when Prapiroon began to move away from the Philippines.[21][22] A total of 866,483 people were affected by the storm across the Mimaropa, Caraga, and Bangsamoro. About 33,645 people were evacuated to emergency shelters. There were 94 damaged residences in Mimaropa, of which, 10 were completely destroyed. A total of 73 sections of road were damaged and five bridges were damaged, while seven roads and a bridge were inaccessible. In Mindanao, a total of 179,744 households were impacted by heavy rainfall.[23]

As of July 22, 2024, the National Disaster Risk Reduction and Management Council reported that 852,765 people were affected by Prapiroon, along with the impacts of the southwest monsoon. This resulted in 15 cities experiencing power outages and 149 houses damaged, along with at least 8 fatalities and 1 missing person, as well as 2 injuries. Agricultural damage reached ₱8.75 million (US$177,582.2), while infrastructure damage was estimated at ₱700,000 (US$14,213.2), leading to a total damage of ₱9.45 million (US$191,795.4).[22] Following the storm, about ₱29 million (US$496,173) worth of aid was distributed to 23,157 affected households.[23] A state of calamity was declared in the municipalities of Cotabato and Kabacan.[24]

China and Hong Kong

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Prior to its landfall, The China Meteorological Administration, issued typhoon and rain warnings along Hainan and Guangdong.[25] A Level 3 out of 4 emergency response alert was issued in Guangxi, as well as a yellow typhoon alert.[26] About 26,000 visitors on Weizhou Island were evacuated prior to the storm through the use of ferries. High-speed rail and ferry services on the island of Hainan were cancelled.[27] All vessels in Hainan were ordered to return to port and offshore workers were allowed to seek shelter on the island. A flood control team was sent to Hainan in preparation for flooding.[28] A No. 1 Typhoon warning signal was issued by the Hong Kong Observatory for Hong Kong, from the afternoon of July 20 to noon on July 22.[29]

As Prapiroon made landfall in Hainan, twelve counties and cities on the island received rainfall in excess of 100 mm (4 in). The highest sustained wind measured on Hainan was 137 km/h (85 mph) in Wanning, where the storm made landfall.[30] High winds were reported in Guangxi, reaching a peak of 89 km/h (55 mph) in Beihai. Torrential rainfall also impacted the province with a maximum accumulation of 38.3 mm (1.5 in) in Donglan County.[26] Rain squalls impacted the Pearl River Delta, where occasional high wind gusts were reported in elevated parts of Hong Kong.[31]

Vietnam

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Infrared satellite loop of Prapiroon making landfall in Vietnam.

Before Prapiroon approached Vietnam, Prime Minister of Vietnam Phạm Minh Chính ordered emergency measures to take place in coastal provinces. Vessels were ordered to return to port or move away from areas within the storm's projected track. Emergency response teams were deployed to protect traffic moving through flood and landslide-prone areas and assist in evacuation and recovery efforts. Measures were also taken to prevent dams and reservoirs from overflowing.[32] Heavy rainfall was expected in Northern Vietnam, reaching as high as 300 mm (12 in) in parts of Thanh Hóa province.[33][34]

As the storm landed in Quảng Ninh, Prapiroon became the first tropical cyclone to strike Vietnam in 640 days, ending a record drought of landfalls.[16] The storm downed trees and damaged billboards and fences in the province of Quảng Ninh.[35] Heavy rain and flooding in Sơn La Province killed seven people and two in Dien Bien Province, with nine others missing.[36] Prapiroon brought significant agricultural impact to Vietnam. In the Cà Mau province and the Hậu Giang province, over 1,000 hectares of rice were damaged due to the heavy rains caused by Prapiroon. In the Trần Văn Thời district, 570 hectares of rice were damaged.[37] As of July 29, damage by the storm and flooding in Son La Province reached 315 billion dong (US$13.36 million);[38] and in Chuong My District in Hanoi reached 92 billion dong (US$3.9 million).[39] In Dien Bien province, damage by the flooding, as of July 30, reached 30 billion dong (US$1.27 million).[40]

Elsewhere

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In Thailand, the remnants of Prapiroon caused heavy monsoonal rains in some parts of the country. People were advised to be alert for dangers such as flash flooding and landslides.[41] The combination of moisture from Prapiroon and Typhoon Gaemi produced severe thunderstorms across Cambodia, which resulted in strong winds, heavy rainfall, and lightning. A large tree fell onto a tuk-tuk in Siem Reap, killing five people and injuring four others. Local authorities cleared the scene of debris and were ordered to control traffic in an effort to prevent further vehicular incidents.[42] In Laos, the remnants of Prapiroon alongside some subsequent depressions would cause US$14 million in damage.[43]

See also

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References

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  1. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 09Z 15 July 2024 Reissued (Report). United States Joint Typhoon Warning Center. July 15, 2024. Archived from the original on July 15, 2024. Retrieved July 15, 2024.
  2. ^ Warning and Summary 150600 (Report). Tokyo, Japan: Japan Meteorological Agency. July 15, 2024. Archived from the original on July 15, 2024. Retrieved July 15, 2024.
  3. ^ Significant Tropical Weather Advisory for the Western and South Pacific Oceans, 01Z 19 July 2024 Reissued (Report). United States Joint Typhoon Warning Center. July 19, 2024. Archived from the original on July 19, 2024. Retrieved July 19, 2024.
  4. ^ Tropical Cyclone Formation Alert (Invest 91W) (Report). United States Joint Typhoon Warning Center. July 19, 2024. Archived from the original on July 19, 2024. Retrieved July 19, 2024.
  5. ^ Prognostic Reasoning for Tropical Depression 04W (Four) Warning No. 1 (Report). United States Joint Typhoon Warning Center. July 19, 2024. Archived from the original on July 20, 2024. Retrieved July 19, 2024.
  6. ^ "Tropical Cyclone Bulletin #1 for Tropical Depression 'Butchoy' (Butchoy)". PAGASA. July 19, 2024. Archived from the original (PDF) on July 19, 2024. Retrieved July 19, 2024.
  7. ^ Warning and Summary 190600 (Report). Tokyo, Japan: Japan Meteorological Agency. July 19, 2024. Archived from the original on July 19, 2024. Retrieved July 19, 2024.
  8. ^ Prognostic Reasoning for Tropical Storm 04W (Prapiroon) Warning No. 5 (Report). United States Joint Typhoon Warning Center. July 20, 2024. Archived from the original on July 21, 2024. Retrieved July 20, 2024.
  9. ^ Prognostic Reasoning No. 9 for TS Prapiroon (2404) (Report). Tokyo, Japan: Japan Meteorological Agency. July 21, 2024. Archived from the original on July 21, 2024. Retrieved July 21, 2024.
  10. ^ Prognostic Reasoning for Tropical Storm 04W (Prapiroon) Warning No. 8 (Report). United States Joint Typhoon Warning Center. July 20, 2024. Archived from the original on July 21, 2024. Retrieved July 20, 2024.
  11. ^ a b Prognostic Reasoning for Tropical Storm 04W (Prapiroon) Warning No. 9 (Report). United States Joint Typhoon Warning Center. July 21, 2024. Archived from the original on July 22, 2024. Retrieved July 22, 2024.
  12. ^ Prognostic Reasoning for Tropical Storm 04W (Prapiroon) Warning No. 10 (Report). United States Joint Typhoon Warning Center. July 22, 2024. Archived from the original on July 22, 2024. Retrieved July 22, 2024.
  13. ^ Prognostic Reasoning No. 12 for STS Prapiroon (2404) (Report). Tokyo, Japan: Japan Meteorological Agency. July 22, 2024. Archived from the original on July 22, 2024. Retrieved July 22, 2024.
  14. ^ a b "RSMC Tropical Cyclone Best Track Name 2404 Prapiroon (2404)". Japan Meteorological Agency. October 25, 2024. Archived from the original on October 25, 2024. Retrieved October 25, 2024.
  15. ^ Prognostic Reasoning for Tropical Storm 04W (Prapiroon) Warning No. 12 (Report). United States Joint Typhoon Warning Center. July 22, 2024. Archived from the original on July 22, 2024. Retrieved July 22, 2024.
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  17. ^ "Storm Prapiroon hits Quang Ninh in northern Vietnam". VNExpress. July 22, 2024. Archived from the original on July 31, 2024. Retrieved July 31, 2024.
  18. ^ "Thời tiết năm 2023 phá vỡ nhiều quy luật". December 30, 2023. Archived from the original on July 31, 2024. Retrieved July 31, 2024.
  19. ^ "Thời tiết ngày càng dị thường". December 30, 2023. Archived from the original on January 8, 2024. Retrieved July 31, 2024.
  20. ^ Tropical Storm 04W (Prapiroon) Warning No. 14 (Report). United States Joint Typhoon Warning Center. July 23, 2024. Archived from the original on July 23, 2024. Retrieved July 23, 2024.
  21. ^ Kristine Daguno-Bersamima (July 20, 2024). "2 LPAs develop into Tropical Depressions Butchoy, Carina". The Philippine Star. Archived from the original on July 27, 2024. Retrieved July 27, 2024.
  22. ^ a b SitRep No. 10 for the Combined Effects of SW Monsoon and TD "Butchoy" (2024) (PDF) (Report). National Disaster Risk Reduction and Management Council. July 22, 2024. Retrieved July 20, 2024.
  23. ^ a b Ian Laqui (July 23, 2024). "Butchoy, Carina, habagat: 8 dead, 2 hurt in Mindanao". The Philippine Star. Archived from the original on July 31, 2024. Retrieved July 27, 2024.
  24. ^ Martin Sandongdong (July 20, 2024). "'Butchoy', 'habagat' fatalities rise to 8; state of calamity in 2 Cotabato towns". Manila Bulletin. Archived from the original on July 27, 2024. Retrieved July 27, 2024.
  25. ^ "China braces itself for twin tropical cyclones after deadly flash floods". Asia One. July 22, 2024. Archived from the original on July 25, 2024. Retrieved July 26, 2024.
  26. ^ a b "Typhoon Prapiroon brings rainstorms, strong gusts to south China". Xinhua. July 22, 2024. Archived from the original on July 24, 2024. Retrieved July 26, 2024.
  27. ^ "26,000 tourists evacuated as Typhoon Prapiroon nears south China". Xinhua. July 21, 2024. Archived from the original on July 26, 2024. Retrieved July 26, 2024.
  28. ^ "China sends work team as Typhoon Prapiroon to make landfall". Xinhua. July 21, 2024. Retrieved July 26, 2024.
  29. ^ Emily Hung; Jeffie Lam (July 21, 2024). "Hong Kong Observatory says T1 typhoon signal in force until at least Monday noon". South China Morning Post. Archived from the original on July 31, 2024. Retrieved July 26, 2024.
  30. ^ "Typhoon Prapiroon brings rainstorms, strong gusts to South China". Xinhua. China Daily. July 22, 2024. Archived from the original on July 25, 2024. Retrieved July 26, 2024.
  31. ^ "T1 signal to remain in force until midnight". The Standard. July 21, 2024. Archived from the original on July 27, 2024. Retrieved July 26, 2024.
  32. ^ "Vietnam prepares for impact of Typhoon Prapiroon and potential flooding". VietnamNet. July 22, 2024. Archived from the original on July 26, 2024. Retrieved July 25, 2024.
  33. ^ Bảo Anh (July 22, 2024). "Bão số 2 đang giật cấp 13 ở Vịnh Bắc Bộ, miền Bắc mưa lớn dồn dập từ đêm nay". VietnamNet. Archived from the original on July 25, 2024. Retrieved July 25, 2024.
  34. ^ "Viet Nam: Flash Update: No. 01 - Tropical Cyclone Prapiroon (Storm No.2 / Butchoy) - 22 July 2024 - Viet Nam | ReliefWeb". reliefweb.int. July 22, 2024. Retrieved July 29, 2024.
  35. ^ Vinh Tho (July 23, 2024). "Storm Prapiroon downgrades into tropical depression, hitting Vietnam's Quang Ninh". Tuoi Tre News. Archived from the original on July 24, 2024. Retrieved July 24, 2024.
  36. ^ Khanh Vu (July 25, 2024). "Floods, landslides kill 10, leave 9 missing in northern Vietnam". Reuters. Retrieved July 25, 2024.
  37. ^ "Typhoon Prapiroon triggers landslides, cuts off traffic in Northern Vietnam". SGGP English Edition. July 24, 2024. Archived from the original on July 31, 2024. Retrieved July 29, 2024.
  38. ^ cand.com.vn. "Sơn La thiệt hại 315 tỷ đồng do mưa lũ lịch sử". Báo Công an nhân dân điện tử (in Vietnamese). Archived from the original on July 28, 2024. Retrieved July 31, 2024.
  39. ^ cand.com.vn. "Đảm bảo tính mạng, sức khỏe, tài sản của hơn 1.000 hộ dân vùng lũ Chương Mỹ và Quốc Oai". Báo Công an nhân dân điện tử (in Vietnamese). Archived from the original on July 30, 2024. Retrieved July 31, 2024.
  40. ^ "Điện Biên thiệt hại khoảng 30 tỷ đồng do thiên tai".
  41. ^ "Tropical Storm 'Prapiroon' causing heavy rainfall in some parts of Thailand". Pattaya Mail. July 24, 2024. Archived from the original on July 26, 2024. Retrieved July 26, 2024.
  42. ^ "Severe weather causes fatal Tuk-Tuk accident in Siem Reap (VIDEO)". Khmer Times. July 24, 2024. Archived from the original on July 27, 2024. Retrieved July 26, 2024.
  43. ^ Chanlivong, Kheuakham (September 19, 2024). "Communities in Laos Come Together for Flood Recovery". Laotian Times. Retrieved September 22, 2024.
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