REGIONAL SUMMARY:
During the fifteen week of 2026, a total of 28 disaster events were reported across the ASEAN region, including earthquakes, floods, landslides, storms, and wind-related disasters in Indonesia and Thailand. In Indonesia, Badan Nasional Penanggulangan Bencana (BNPB) reported disaster incidents across Bengkulu, West Java, Central Java, East Java, South Kalimantan, West Nusa Tenggara, East Nusa Tenggara, Papua, West Papua, South Sulawesi, Central Sulawesi, and North Sumatra. Meanwhile, in Thailand, Department of Disaster Prevention and Mitigation (DDPM) reported storms and strong winds in Songkhla.
HIGHLIGHT:
A magnitude 4.7 earthquake occurred on 8 April at 23:17 (UTC+7) at a depth of 5 km, with its epicentre located approximately 21 km southeast of Larantuka, East Nusa Tenggara, Indonesia. Based on reports from BNPB, the earthquake affected the areas of Adonara Timur and Solor Timur. As of 11 April at 22:50 (UTC+7), BNPB reported 18 injured persons and approximately 371 affected families (around 1.1K people). Reported damages included 332 houses, 4 educational facilities, 3 places of worship, and 4 public facilities. Identified urgent needs include clean water; hygiene items (bathing and washing supplies); basic food items; tarpaulins; mats; baby and toddler supplies; foldable mattresses; wheelchairs; adult diapers; evacuation tents and family tents; supplementary food for infants and toddlers; hygiene kits; and stretchers. As of 11 April, several affected individuals are still self-evacuating in their house yards or nearby gardens. Relevant authorities are undertaking necessary actions to respond to the situation and support affected communities.
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, Malaysia, and southern Thailand. As of this reporting period, Tropical Cyclone SINLAKU, currently located over the western Pacific Ocean, is forecast to generally track northwestward and recurve towards the southern coast of Japan, with no landfall expected over the ASEAN landmass (PAGASA, JTWC).
GEOPHYSICAL:
Three (3) 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), Dempo (alert level II), Semeru (alert level III), Lewotobi Laki-laki (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 also predicted over much of Mainland Southeast Asia and most of the northern 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 a small increase in chance of very heavy rainfall over parts of Sumatra; and extreme hot conditions are predicted very likely for much of northeastern and central Mainland Southeast Asia and moderate increase in chance over southern Mainland Southeast Asia, northeastern Borneo, and the southeastern Maritime Continent. La Niña conditions are weakening and are expected to transition (or have transitioned) to ENSO-neutral conditions in March-April 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;
Various news agencies.
