REGIONAL SUMMARY:
During the fourteenth week of 2026, a total of 29 disaster events were reported across the ASEAN region, including earthquakes, floods, storms, and wind-related disasters in Indonesia, Thailand, and Viet Nam. In Indonesia, Badan Nasional Penanggulangan Bencana (BNPB) reported disaster incidents across Bali, Bengkulu, West Java, Central Java, East Java, South Kalimantan, Lampung, West Nusa Tenggara, South Sulawesi, Central Sulawesi, North Sulawesi, North Maluku, and North Sumatra. In Thailand, Department of Disaster Prevention and Mitigation (DDPM) reported storms and strong winds in Phetchabun. Meanwhile, in Viet Nam, Viet Nam Disaster and Dyke Management Authority (VDDMA) reported storms in Lai Chau.
HIGHLIGHT:
A M7.3 earthquake (revised from M7.6) occurred on 2 April at 0548 HRS UTC+7, at a depth of 18 km, with an epicentre located approximately 127 km southeast of Bitung, North Sulawesi, Indonesia. The earthquake triggered a tsunami warning for North Sulawesi and North Maluku. According to BMKG, tsunami waves were observed based on sea level monitoring in the following locations: Belang (0.68 m), Bitung (0.20 m), Bumbulan (0.13 m), Gita (0.24 m), West Halmahera (0.30 m), Kedi (0.20 m), North Minahasa (0.75 m), Sidangoli (0.35 m), and Sitaro (0.19 m). As of 6 April at 0548 HRS UTC+7, more than 1K aftershocks have been recorded, with the largest magnitude reaching M5.8.
According to BNPB, these earthquakes has affected several areas in North Sulawesi (Bitung, Manado, Minahasa, Tomohon, and Minahasa Utara) and North Maluku (Ternate, Tidore Kepulauan, Halmahera Barat, Halmahera Tengah, Halmahera Tengah, and Halmahera Selatan). As of 6 April at 0500H UTC+7, BNPB reported 1 person dead, 5 persons injured, around 700 families (2.9K persons) affected with around 1.4K persons displaced. Damages reports includes 532 houses, 5 educational facilities, 63 worship paces, 13 health facilities, and 16 public facilities. In response to the situation, relevant authorities—including BPBD, Social Affairs Offices, Police, TNI, BASARNAS—are actively conducting assessments while coordinating ongoing response efforts. BNPB have deployed teams to support emergency response operations and mobilise logistical assistance. The AHA Centre continues to closely monitor the situation and remains ready to provide assistance as needed.
HYDRO-METEO-CLIMATOLOGICAL:
For the past week, data from the ASEAN Specialised Meteorological Centre (ASMC) indicated medium to high 7-day average rainfall across Brunei Darussalam, Indonesia, and Malaysia. As of this reporting period, tropical disturbance (INVEST 90W), located over the western Pacific Ocean, is expected to develop with a low likelihood of tropical cyclone formation during 6–12 April. It is forecast to move generally northward during 13–19 April, with a low to moderate likelihood of TC development (PAGASA, JTWC).
GEOPHYSICAL:
Twenty-Six (26) significant earthquakes (M>5.0) were recorded by Indonesia’s Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) and the Philippines Institute of Volcanology and Seismology (PHIVOLCS). Mount Marapi (alert level II), Anak Krakatau (alert level II), Semeru (alert level III), Ili Lewotolok (alert level II), Ibu (alert level II), and Dukono (alert level II) in Indonesia, and Taal (alert level 1), Mayon (alert level 3), Kanlaon (alert level 2), and Bulusan (alert level 1) volcanoes in the Philippines reported recent volcanic activity according to Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) and the PHIVOLCS.
OUTLOOK:
According to the ASEAN Specialised Meteorological Centre (ASMC), for the coming week, drier than usual conditions are predicted over much of Mainland Southeast Asia and most of the northern and southeastern Maritime Continent; and warmer than usual temperatures are predicted over much of Mainland Southeast Asia and parts of the northwestern Maritime Continent. For the regional assessment of extremes, there is low chance of very heavy rainfall for ASEAN region; and a moderate increase in chance of extreme hot conditions is predicted for most of northern, eastern and southern Mainland Southeast Asia, central parts of Malay Peninsula and parts of northern Sumatra. La Niña conditions are expected to transition to ENSO-neutral conditions in March-April 2026. Models predict the Indian Ocean Dipole index to be neutral in March 2026.
Sources:
ASEAN Disaster Monitoring & Response System (DMRS); ASEAN Disaster Information Network (ADINet); ASEAN Specialised Meteorological Centre (ASMC); ASEAN Earthquake Information Centre (AEIC); Joint Typhoon Warning Centre (JTWC);
Indonesia: BNPB, BMKG, PVMBG;
Philippines: PHIVOLCS;
Thailand: DDPM;
Viet Nam: VDDMA;
Various news agencies.
