Attachments
REGIONAL SUMMARY:
In the third week of 2025, the ASEAN region faced 59 disasters, including floods, landslides, storms, and a volcanic eruption, impacting Indonesia, Malaysia, the Philippines, and Thailand. According to Indonesia’s Badan Nasional Penanggulangan Bencana (BNPB), floods were reported in various provinces, including Aceh, Banten, West Java, Central Java, East Java, West Kalimantan, South Kalimantan, East Kalimantan, Lampung, Riau, South Sulawesi, Central Sulawesi, South Sumatra, and North Sumatra. Additionally, the Ibu Volcano in Halmahera Barat, North Maluku, experienced an eruption. In Malaysia, according to Agensi Pengurusan Bencana Negara (NADMA), flooding was reported in Sabah, Sarawak, and Terengganu, with ongoing situations particularly in Sabah and Sarawak. The Philippines’ National Disaster Risk Reduction and Management Council (NDRRMC) recorded floods, storms, and landslides in Regions XI and VI of the Philippines. Meanwhile, Thailand’s Department of Disaster Prevention and Mitigation (DDPM) reported floods in Songkhla and Narathiwat. Furthermore, reports from media sources indicated a landslide in Kachin State, Myanmar, on 13 January, resulting in casualties, including fatalities and missing persons, as well as damages to several houses. The AHA Centre is coordinating with Myanmar’s Department of Disaster Management (DDM) to validate and gather more information about this disaster event.
HIGHLIGHT:
In Indonesia, BNPB reported that heavy rainfall and river overflow have led to widespread flooding across the Sumatra Islands, from Aceh to Lampung. As of 20 January, at 0700 HRS UTC+7, the affected areas include Aceh (Aceh Besar, Aceh Tamiang, Aceh Timur, and Pidie), North Sumatra (Asahan, Batu Bara, Deli Serdang, Binjai, Medan, Labuhan Batu Selatan, Serdang Bedagai, Simalungun, and Tebing Tinggi), Riau (Indragiri Hulu, Kampar, Kuantan Singingi, Pekanbaru, Pelalawan, and Siak), South Sumatra (Musi Banyuasin, Ogan Komering Ulu, and Prabumulih), and Lampung (Bandar Lampung, Lampung Timur, and Pesawaran). The disasters have resulted in the loss of two lives, affected 19.5K families (approximately 68.9K individuals), and displaced nearly 1K people. Reports indicate damage to 27.9K houses, 2 bridges, 10 roads, 11 schools, 3 health facilities, 9 public facilities, 11 places of worship, and approximately 2.8K hectares of agricultural land. Relevant agencies are actively responding to the situation and continue to monitor and assess the impact.
HYDRO-METEO-CLIMATOLOGICAL:
For the past week, data from the ASEAN Specialised Meteorological Centre (ASMC) showed medium to high 7-day average rainfall spreading across Maritime Continent and southern mainland Southeast Asia which includes Brunei, Indonesia, Malaysia, the Philippines, Singapore, and Southern Thailand. As of this reporting, there is no active tropical cyclone being monitored in the ASEAN region (JTWC).
GEOPHYSICAL:
Six (6) significant earthquakes (M>5.0) were recorded by Indonesia’s Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) and the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Mount Ibu (alert level IV), Lewotobi Laki-laki (alert level III), Ili Lewotolok (alert level II), Dukono (alert level II), Semeru (alert level II), and Marapi (alert level II) in Indonesia, and Kanlaon Volcano (alert level 3), Taal (alert level 1), and Mayon (alert level 1) in the Philippines reported recent volcanic activity according to Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) and PHIVOLCS.
OUTLOOK:
According to the ASEAN Specialised Meteorological Centre (ASMC), for the coming week, wetter conditions are predicted over much of the Maritime Continent, and drier conditions are predicted over parts of southern and eastern Mainland Southeast Asia. For the regional assessment of extremes, there is a moderate increase in chance over much of the central equatorial region, and a small increase in chance over much of the western and easternmost parts of the equatorial region, and parts of the southern Maritime Continent for very heavy rainfall events; and a small increase in chance for extreme hot conditions to occurs over most of the Philippines and northern Borneo. La Niña-like conditions predicted for January (most models predict these conditions not to persist long enough to declare a La Niña event).
Sources:
ASEAN Disaster Monitoring & Response System (DMRS); ASEAN Specialised Meteorological Centre (ASMC); Joint Typhoon Warning Centre (JTWC);
Indonesia: BNPB, BMKG, PVMBG;
Malaysia: NADMA;
Myanmar: DDM;
Philippines: NDRRMC, PHIVOLCS;
Thailand: DDPM;
Various news agencies.