The newly formed tropical cyclone BUALOI – named Opong in the Philippines – is moving northwest toward central Philippines. On 25 September at 0.00 UTC, its centre was located 383 km east of Samar Island’s eastern coast, with maximum sustained winds of 102 km/h (tropical storm). BUALOI is expected to continue northwest and may make landfall over southern Luzon Island between 25 and 26 September. It will subsequently cross central and northern Philippines – particularly southern Luzon and Mindoro – from 26 to 27 September, bringing heavy rain and strong winds. After that, it will continue north-west over the South China sea and it could make landfall over north-eastern Viet Nam on 29-30 September. (ECHO, 25 Sep 2025)
Tropical cyclone BUALOI (named “Opong” in the Philippines) made landfall over the eastern Samar Island, central Visayas, central Philippines on late in the afternoon (UTC) of 25 September with maximum sustained winds of 102 km/h (tropical storm). On 26 September at 0.00 UTC its centre was located over the western Masbate island, central Visayas, with maximum sustained winds of 111 km/h (tropical storm). The passage of BUALOI over central Philippines caused very heavy rainfall, strong winds, floods and landslides. NDRRMC reports, as of 26 September, 14 fatalities, two missing, 17 injured, more than 50,300 displaced people and a total of approximately 1.21 million affected people. BUALOI is expected to pass over western Visayas on 26 September, slightly strengthening, with maximum sustained winds up to 120 km/h (typhoon). After that, it is forecast to continue north-west over the South China Sea and to make landfall over northern Viet Nam on 28 September with maximum sustained winds up to 148 km/h. (ECHO, 26 Sep 2025)
Tropical cyclone BUALOI made its second landfall in central-northern Viet Nam over the area of Ky Anh town (Ha Tinh province) on 28 September around 18.00 UTC, with maximum sustained winds up to 155 km/h (typhoon). On 29 September at 6.00 UTC, its centre was located approximately over the border area between northern Viet Nam and north-eastern Laos, with maximum sustained winds of 93 km/h (tropical storm). BUALOI’s passage over the Philippines, combined with previous tropical cyclones and the ongoing Southwest monsoon, caused very heavy rainfall, floods and landslides, resulting in 27 fatalities, 16 missing, 33 injured, around 190,800 displaced and approximately 3.42 million affected people. In Thailand, seven fatalities, around 100,000 displaced and nearly 270,000 affected people were reported. In Viet Nam, nine fatalities, an uncertain number of displaced people and over 30 isolated villages were reported, mainly due to landslides. BUALOI is expected to continue moving north-west over northern Laos on 29 September, further weakening and dissipating over eastern Myanmar on 30 September. (ECHO, 29 Sep 2025)
On 30 September, very early in the morning (UTC), tropical depression BUALOI dissipated over the border area between north-western Laos and eastern Myanmar. Its passage over the Philippines (combined with the previous tropical cyclones and the ongoing Southwest monsoon) caused very heavy rainfall, floods and landslides. The NDRRMC reports, as of 1 October, 37 fatalities, 14 still missing persons and 41 injured people. In addition, around 122,900 currently displaced people (of whom 81,750 are across 1,123 evacuation centres) and approximately 4.12 million affected people were reported. In Laos, the ADINet reports, as of the same date, two fatalities and a total of over 10,100 affected people. In Viet Nam, the same source reports 26 fatalities, 22 still missing people, 105 injured people, and nearly 598,700 affected people. In Thailand, the IFRC reports eight fatalities and more than 293,600 affected people. (ECHO, 1 Oct 2025)
As of 1 October, authorities reported 36 deaths, 21 people missing and 147 injured after severe flooding, landslides and wind damage across northern and north- central Viet Nam. Many homes, healthcare facilities and schools have been affected. Around 154,807 homes are damaged or roofless and about 57,915 are flooded. Power and road networks remain disrupted (about 6,406 power poles down; around 1,400 road blockages), with around 1,500 households isolated in Hà Tĩnh. About 51.269 ha of crops and around 13,478 ha of aquaculture are affected, creating short-term food access risks in cut-off communes. (OCHA, 2 Oct 2025)
Children and families in northern and north-central Viet Nam face severe hardship after Typhoons Bualoi and Matmo caused widespread destruction to homes, livelihoods, and public infrastructure. The total losses from both typhoons are estimated at nearly VND 33,000 billion (US$1.3 billion). Rapid assessments conducted by government authorities together with the UN and development partners show that over 545,000 houses have been impacted, affecting an estimated 1 million children and their families. (UNICEF, 15 Oct 2025)
An estimated 513,500 poor and near-poor households across 12 typhoon-affected provinces in Northern and Central Viet Nam remain among the most vulnerable. […] Over 1.2 million people face disrupted access to safe drinking water and sanitation in all affected provinces, with an estimated 189,000 vulnerable people in the six most affected provinces in urgent need of support to access safe water, sanitation and hygiene materials. Approximately 150 healthcare facilities—including 50 hospitals and 100 commune health stations—sustained significant damage in the six most affected provinces, including their water and sanitation facilities. […] Nearly 12,000 pregnant women and 219,000 children under five require urgent nutrition support. Amongst them,
more than 40,000 children under five have already been suffering from pre-existing stunting or acute malnutrition, including nearly 2,000 children suffering from severe acute malnutrition and about 7,500 cases of moderate acute malnutrition (UNICEF, 23 Oct 2025)
