WEEKLY DISASTER UPDATE 27 October – 2 November 2025

REGIONAL SUMMARY:

During the forty-fourth week of 2025, a total of 27 disaster events were reported across the ASEAN region, including floods, landslides, storms, and wind-related incidents affecting Indonesia, the Philippines, Thailand, and Viet Nam. Additionally, in Malaysia, flooding that began in the week 43 continued to impact communities in Pendang, Kedah, as reported by Agensi Pengurusan Bencana Negara (NADMA) on 3 November 2025. In Indonesia, Badan Nasional Penanggulangan Bencana (BNPB) recorded multiple disaster events across several provinces, including Aceh, Banten, Jakarta, West Java, Central Java, East Java, West Sulawesi, Central Sulawesi, Southeast Sulawesi, and North Sulawesi. In the Philippines, National Disaster Risk Reduction and Management Council (NDRRMC) reported disaster situations in Regions VI and XIII. In Thailand, Department of Disaster Prevention and Mitigation (DDPM) continued to reported flooding situations in Northern and Central Regions. Meanwhile, in Viet Nam, Viet Nam Disaster and Dyke Management Authority (VDDMA) reported flooding and landslides in Quang Tri, Hue, Da Nang, Quang Ngai, Lam Dong, and Dong Thap.

HIGHLIGHT:

Since the end of October 2025, continuous heavy to torrential rainfall has caused widespread flooding and several landslides across Central Viet Nam, severely affecting the lives and livelihoods of residents. As of 2 November, according to VDDMA, these disaster situations have resulted in 42 people reported dead or missing, 78 injured, 103 houses collapsed or swept away, and 451 houses damaged. At present, a total of 12,676 houses remain inundated. In addition, agricultural areas and critical infrastructure such as transportation, electricity, and telecommunications have sustained significant damage. In response, On 2 November, the Prime Minister issued Official Telegram No. 206/CD-TTg regarding the urgent efforts to promptly address and mitigate the impacts of heavy rain and flooding in the Central Region. At the same time, another tropical cyclone, internationally named KALMAEGI, which is currently affecting the Philippines, is expected to also impact Viet Nam. NCHMF has forecasted that KALMAEGI may reach Viet Nam’s landmass around 6–7 November 2025. Accordingly, the National Civil Defence Steering Committee issued Official Telegram No. 25/CD-BCD-BNNMT on 2 November 2025, urging coastal provinces from Thanh Hóa to An Giang to take proactive preparedness measures for the approaching cyclone (KALMAEGI) near the East Sea.

The AHA Centre continues to closely monitor the situation in coordination with VDDMA and stands ready to provide assistance should the need arise.

HYDRO-METEO-CLIMATOLOGICAL:

For the past week, data from the ASEAN Specialised Meteorological Centre (ASMC) indicated medium to high 7-day average rainfall over Cambodia, Indonesia, Lao PDR, Malaysia, Myanmar, Philippines, Thailand, and Viet Nam. Tropical Cyclone KALMAEGI as of 1600H UTC+7, at Typhoon Category, was estimated located at 170 km East Southeast of Guiuan, Eastern Samar, the Philippines. KALMAEGI is forecast to make landfall or pass very close to Homonhon Island or Dinagat Islands, the Philippines tonight or early tomorrow morning, then it is then expected to make another landfall over the Philippines landmass before emerge over the West Philippine Sea by 5 Nov and is expected to exit the Philippine Area of Responsibility by 6 Nov (PAGASA).