Severe Tropical Storm Wutip was a strong tropical cyclone that impacted South China,Vietnam and the Philippines,in early June 2025. The first named storm of the annual typhoon season,Wutip's origins can be traced back to June 5,when the Joint Typhoon Warning Center (JTWC)[nb 1] identified an area of atmospheric convection to the west of Yap in the Caroline Islands. After crossing Luzon,the system developed into a tropical depression over the South China Sea on June 9 as it moved west-northwestward along the southwestern periphery of a mid-level subtropical high. The Japan Meteorological Agency (JMA)[nb 2] named the system Wutip on June 11 after it intensified into a tropical storm,making it one of the five latest-named storms in the Western North Pacific basin. The following day,Wutip strengthened into a severe tropical storm and reached its peak on June 13,with ten-minute sustained winds of 110km/h (70mph) and a central pressure of 980hPa (28.94inHg). Wutip briefly passed over the far western part of Hainan Island,China and made its first landfall near Dongfang City on the same day,before reemerging over the Gulf of Tonkin shortly afterwards. The JTWC reported that on June 14,Wutip had intensified into a minimal typhoon before making its second landfall near Leizhou,Guangdong,China. After landfall,it weakened into a minimal tropical storm. Once inland,the system further weakened into a tropical depression and continued to be tracked until it dissipated on June 15.
In the Philippines,the precursor to Wutip,along with the southwest monsoon,brought widespread rainfall and floods to parts of Luzon,as well as Central and Eastern Visayas. In ĐàNẵng,Vietnam,the outer rainbands of the storm caused severe flooding on streets and in houses due to heavy rainfall,with some areas sustaining minimal damage. Power outages were also reported in parts of Vietnam. In the Chinese provinces of Hainan and Guangdong,Wutip brought strong winds with powerful gusts. The remnants of Wutip brought torrential rain in the Pearl River estuary. At least 17 people were reported dead and one was injured. Preliminary estimated economic damages according to Aon Benfield exceeded US$100 million.[2]
Meteorological history
Map plotting the storm's track and intensity,according to the Saffir–Simpson scale
The origins of Wutip date back to June 5, when the JTWC identified an area of atmospheric convection about 300km (180mi; 160nmi) west of Yap, noting favorable conditions for tropical cyclogenesis.[3] On the following day, the JMA noted that the system had developed into a low-pressure area.[4] After crossing Luzon, the JMA upgraded the system to a tropical depression over the South China Sea on June 9.[5] By 06:00 UTC on June 10, the system was moving south of the Paracel Islands,[6] and three hours later, the JTWC issued a Tropical Cyclone Formation Alert (TCFA) before upgrading it to a tropical depression,[7] assigning it the designation 01W later that day[8] as it moved west-northwest along the southwestern periphery of a mid-levelsubtropical high.[9]
Wutip over the South China Sea on June11
By June 11, the depression had intensified into a tropical storm and was namedWutip by the JMA.[10] This marked the fifth-latest first named storm in the Western Pacific basin, following Tropical Storm Nichole in 1998 (July 9), Typhoon Nepartak in 2016 (July 3), Severe Tropical Storm Wilma in 1973 (July 1), and Typhoon Sarah in 1983 (June 25).[11] Initially, the JTWC held off on classifying the system as a tropical storm because satellite imagery showed a small, fully exposed low-level circulation center (LLCC), with only limited convection developing near the center.[12] Conditions gradually improved, with warm sea surface temperatures supporting organization despite the system's limited structure.[13][14] At 21:00 UTC on June 11, after deep convection consolidated over the LLCC, the JTWC upgraded the system to a tropical storm.[15] By June 12, satellite imagery showed well-defined convective banding tightly wrapping around an obscured center.[16]
At 18:00 UTC on June 12, the JMA classified Wutip as a severe tropical storm as persistent convection aligned more closely with the LLCC and cloud-top temperatures dropped to −82°C (−116°F).[17] Moving westward along the southwestern edge of a mid-level subtropical high,[18] Wutip maintained this structure into June 13, when spiral rainbands became increasingly organized around the center.[19] At 03:00 UTC, the JMA assessed the storm at peak intensity with 10-minute sustained winds of 110km/h (70mph) and a central pressure of 980hPa (28.94inHg).[20]
Microwave imagery revealed a developing eye feature, with convective bands wrapping around the storm's southern semicircle as it remained nearly stationary in the Gulf of Tonkin, west of Hainan, China.[21] Approaching the subtropical ridge axis,[22] Wutip curved northeastward and began accelerating.[22][23] The storm briefly crossed the far western portion of Hainan Island, making its first landfall near Dongfang City at around 23:00 CST (15:00 UTC) on June 13,[22] before reemerging over the Gulf of Tonkin shortly afterwards.[24] On June 14, the JTWC reported that Wutip had rapidly intensified into a minimal typhoon, with one-minute sustained winds of 120km/h (75mph). Satellite imagery showed a compact, 27.8km (17.3mi; 15nmi) eye surrounded by shallow to moderate convective activity, though deep convection had largely dissipated.[25] Later that day, Wutip made a second landfall near Leizhou City in Guangdong Province at approximately 12:30 CST (04:30 UTC).[26] After that, the storm weakened into a minimal tropical storm as its eye feature filled in, prompting the JTWC to issue its final advisory at 09:00 UTC.[27] Once inland, the JMA downgraded Wutip to a tropical depression and continued tracking it until dissipation at 12:00 UTC on June 15.[28][29]
Preparations
Philippines
On June 7, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) issued flood warnings for the weather disturbance that would later develop into Wutip, cautioning residents about potential landslides and flash floods. By June 10, the agency advised communities in affected areas to remain on alert for possible flooding.[30][31]
On June 11, China's National Emergency Broadcast [cn] urged residents in coastal regions in coastal areas to stay updated on weather developments.[33] The Hainan Provincial Disaster Prevention, Mitigation and Relief Committee activated a Level IV emergency response for Wutip.[34] Meanwhile, the Ministry of Natural Resources forecast waves of 3–5m (9.8–16.4ft) along the coast of Hainan.[35]
The Hainan Provincial Meteorological Bureau issued a yellow alert (Level III),[36] while the cities of Wanning,[37], Haikou[38], and Baisha Li Autonomous County[39] declared a blue alert (Level IV). Fishing boats in Guangdong Province were ordered back to port.[40] By June 12, 139 flights were canceled at Haikou Meilan International Airport, and all ferry services across the Qiongzhou Strait were suspended, leaving 1,200 trucks stranded near ports. A scheduled concert by Cantopop singer Eason Chan at the Wuyuan River Stadium in Haikou was also called off.[41] Sixteen cities and counties across the province suspended classes,[41] and authorities evacuated 16,651 people from high-risk areas.[42] Several tourist attractions temporarily closed due to the storm.[43]
Macau and Hong Kong
In Macau, the Meteorological and Geophysical Bureau (SMG) raised Standby Signal No.1 [yue; tw] at 06:00 MST on June 11 (22:00 UTC on June 10).[44][45] Strong Wind Signal No.3 was hoisted later that day between 06:00 MST[46][47] and 18:00 MST on June 12,[48][49] prompting the suspension of primary school classes.[50] The SMG again raised Signal No.3 at 08:00 local time on June 14,[51] before lowering all tropical cyclone signals on June 15 at 15:30 local time.[52]
In Hong Kong, the Hong Kong Observatory (HKO) issued Standby Signal No.1 at 16:40 UTC on June 10 (00:40 HKT on June 11) as Wutip was upgraded to a tropical depression within 800km (500mi) of the territory.[53][54] Strong Wind Signal No.3 followed at 12:20 local time on June 14[55][56] before being replaced by the Strong Monsoon Signal on June 15 at 15:40, which remained in effect until 21:00.[57][58][59][60]
Indochina
The Ministry of Water Resources and Meteorology of Cambodia reported that the storm was expected to bring light rain to the country.[61] In Laos, the Department of Meteorology and Hydrology warned that Wutip could produce moderate rainfall and potentially trigger landslides.[61] The Thai Meteorological Department noted that Wutip noted that the storm would strengthen the regional monsoon,[61] while Vietnam's National Centre for Hydro-Meteorological Forecasting (NCHMF) predicted strong winds and high waves across the northwestern South China Sea and the Paracel Islands.[61] The agency also forecast heavy rainfall for much of the country.[62][63] Authorities in Vietnam notified 18,570 workers on 6,331 fishing vessels about the storm's approach.[64] Local governments were instructed to prepare emergency response measures,[65] and the Search and Rescue and Civil Defense Department in Kon Tum Province urged its local units to closely monitor the storm's development.[66]
Parts of Phú Xuân District, Huế saw flooding, while light rainfall reached the country's Central Highlands.[80] In Mít Cát Village, Kim Thủy Commune, Lệ Thủy District, Quảng Bình Province, 52 residents from 10 households were evacuated due to high water levels.[81] Across the country, more than 3,500 homes were flooded,[78] including 2,770 in Quảng Trị, 725 in Quảng Nam, and 80 in Da Nang.[82] Ten landslides blocked roads in Bảo Yên District, Lào Cai Province,[83] and widespread power outages were reported.[84] A fishing vessel sank off the coast, and flights at Da Nang International Airport were disrupted.[85] At least 18,337 hectares (45,310 acres) of rice fields and nearly 1,000 hectares (2,500 acres) of other cropland were inundated. Water levels in several rivers reached their highest marks in 30 years.[76]
China
In Hainan, Wutip brought damaging winds with gusts of 191–217km/h (119–135mph; 103–117kn).[86] Authorities evacuated 5,192 people from at-risk homes, 9,789 from construction sites, and 1,580 from low-lying flood-prone areas. Coastal waves reached 3.4–4.6m (11–15ft), damaging some fishing vessels.[87] Twelve sailors were rescued after their cargo ship was battered by 3.0m (10ft) waves.[88] Strong winds toppled 698 trees in Sanya, while 1,200 trucks were stranded near ports.[89] After its second landfall, the storm brought rain and wind to Zhanjiang, Suixi County, and Leizhou in Guangdong Province, with speeds of 37–46km/h (23–29mph; 20–25kn).[90] A rain-induced landslide in Luchuan County, Guangxi, claimed three lives.[91] Widespread flooding affected Huaiji County in Guangdong, displacing 70,000 people.[92] Officials in Zhejiang Province issued emergency flood alerts,[93] while parts of Rongjiang County were inundated, and a bridge on the Xiarong Expressway in Sandu County, Guizhou Province was washed away.[94] Direct economic losses in China totaled CN¥1.81 billion(US$280.62 million).[95]
Macau and Hong Kong
The remnants of Wutip dumped heavy rain over the Pearl River estuary on June 17. Macau issued the amber and red rainstorm signals at 06:20 and 06:35 MST, respectively, prompting suspension of primary school classes and cancellation of morning classes for secondary schools.[96][97][98] In Hong Kong, the thunderstorm warning and the Amber rainstorm signal were issued at 02:30 and 07:30 HKT, respectively.[99][100][101][102]
↑ The Joint Typhoon Warning Center is a joint United States Navy– United States Air Force task force that issues tropical cyclone warnings for the western Pacific Ocean and other regions.[1]
↑ Warning and Summary 050600 (Report). Tokyo, Japan: Japan Meteorological Agency. June 5, 2025. Archived from the original on June 5, 2025. Retrieved June 5, 2025.
↑ Warning and Summary 091200 (Report). Tokyo, Japan: Japan Meteorological Agency. June 9, 2025. Archived from the original on June 9, 2025. Retrieved June 9, 2025.
↑ RSMC Tropical Cyclone Advisory (Report). Tokyo, Japan: Japan Meteorological Agency. June 10, 2025. Archived from the original on June 10, 2025. Retrieved June 10, 2025.{{cite report}}: CS1 maint: bot: original URL status unknown (link)
↑ Warning and Summary 051200 (Report). Tokyo, Japan: Japan Meteorological Agency. June 15, 2025. Archived from the original on June 15, 2025. Retrieved June 15, 2025.
↑ "2025年第1号台风"蝴蝶"要来了，将在海南岛南部到广东西部沿海一带登陆"[Typhoon No. 1 "Butterfly" in 2025 is coming, and it will make landfall along the coast from the southern part of Hainan Island to the western part of Guangdong]. The Cover. June 10, 2025. Archived from the original on June 10, 2025. Retrieved June 11, 2025.
↑ "1号台风生成 南海将出现3到5米的大浪到巨浪"[Typhoon No. 1 will generate 3 to 5 metres of high to high waves in the South China Sea]. c.m.163. June 11, 2025. Retrieved June 11, 2025.
↑ "海南省气象局发布台风黄色预警[III级/较重]"[Hainan Provincial Meteorological Bureau issued a yellow warning for typhoon [Level III/heavier]]. China Meteorological Administration. June 11, 2025. Retrieved June 11, 2025.
↑ "万宁市气象台发布台风蓝色预警[Ⅳ级/一般]"[Wanning Meteorological Bureau Issued Typhoon Blue Warning [Level IV/General]]. China Meteorological Administration. June 11, 2025. Archived from the original on June 11, 2025. Retrieved June 11, 2025.
↑ "海口市气象台发布台风蓝色预警[Ⅳ级/一般]"[Haikou Meteorological Bureau issues a blue warning for typhoons [Level IV./General]]. China Meteorological Administration. June 11, 2025. Archived from the original on June 11, 2025. Retrieved June 11, 2025.
↑ "白沙县气象台发布台风蓝色预警[Ⅳ级/一般]"[Baisha County Meteorological Bureau issued a blue warning for typhoons [Level IV./General]]. China Meteorological Administration. June 11, 2025. Archived from the original on June 11, 2025. Retrieved June 11, 2025.
↑ "1号台风即将生成 广东要求海域内作业渔船回撤"[Guangdong requires fishing boats operating in the sea area to retreat]. news.cnr.cn. June 11, 2025. Retrieved June 11, 2025.
↑ "1号台风转强朝中国海南岛方向移动1"[Typhoon No. 1 strengthens and moves towards China's Hainan Island]. cn.sggp.org.vn. June 13, 2025. Archived from the original on June 16, 2025. Retrieved June 13, 2025.
↑ "受台风"蝴蝶"影响 海南已转移数万人"[Tens of thousands of people have been relocated in Hainan due to the impact of Typhoon "Butterfly]. Xinhua News Agency. June 13, 2025. Retrieved June 13, 2025.
↑ "受台风"蝴蝶"影响 广西陆川发生山体滑坡致三人遇难"[Affected by Typhoon Butterfly, a landslide occurred in Luchuan, Guangxi, killing three people]. Lianhe Zaobao (in Simplified Chinese). Retrieved June 15, 2025.
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