REGIONAL SUMMARY:
During the nineteenth week of 2026, a total of 45 disaster events were reported across the ASEAN region, including floods, landslides, storms, volcanic activity, and wind-related disasters in Cambodia, Indonesia, Malaysia, the Philippines, Thailand, and Viet Nam. In Cambodia, National Committee for Disaster Management (NCDM) reported wind-related disasters in Oddar Meanchey. In Indonesia, Badan Nasional Penanggulangan Bencana (BNPB) reported disaster events across Aceh, Banten, Bengkulu, Jakarta, Jambi, West Java, West Kalimantan, North Maluku, South Sulawesi, Central Sulawesi, Southeast Sulawesi, West Sumatra, South Sumatra, and North Sumatra. In Malaysia, Agensi Pengurusan Bencana Negara (NADMA) reported floods in Johor, Kedah, and Melaka. As of this reporting period, flooding was still being reported in Perak (Larut, Matang, and Selama) and Kedah (Kulim). In the Philippines, National Disaster Risk Reduction and Management Council (NDRRMC) reported an M6.0 earthquake in Eastern Samar. Meanwhile, in Thailand, Department of Disaster Prevention and Mitigation (DDPM) reported storms and wind-related disasters in Ang Thong, Bueng Kan, Chaiyaphum, Chanthaburi, Chiang Mai, Kamphaeng Phet, Lampang, Lamphun, Lopburi, Mae Hong Son, Nakhon Ratchasima, Nakhon Sawan, Nan, Pathum Thani, Phetchabun, Phichit, Phitsanulok, Phrae, Rayong, Saraburi, Sing Buri, Tak, Udon Thani, and Uttaradit. Lastly, in Viet Nam, Viet Nam Disaster and Dyke Management Authority (VDDMA) reported storms and wind-related disasters in Dong Thap, Lao Cai, Tuyen Quang, and Phu Tho.
HIGHLIGHT:
In Indonesia, flooding occurred in Musi Rawas Utara Regency (South Sumatra), following moderate to heavy rainfall on Thursday, 7 May 2026 at 0400H UTC+7, affecting 4 districts, namely Karang Jaya, Rupit, Karang Dapo, and Rawas Ilir districts. According to BNPB, as of 10 May 2026 at 2045H UTC+7, one fatality was reported, while approximately 14.2K households (54.3K people) were affected. Around 14.2K houses were affected, including approximately 35 houses heavily damaged, 11 moderately damaged, and 101 slightly damaged. Reported damages also included five bridges, 16 health facilities, 44 educational facilities, 35 places of worship, 11 inundated office buildings, 27 inundated fishponds, 30 hectares of rice fields, and 850 hectares of plantations. The Regent of Musi Rawas Utara declared an Emergency Response Status for Hydrometeorological Disaster for the period of 7–20 May 2026. Urgent needs include fiberglass boats, boat engines, folding beds, life jackets, blankets, ready-to-eat food, clothing, bridge repairs, and reconstruction of damaged houses. As of the latest update, floodwaters in Karang Jaya District had receded, water levels in Rupit District had started to decrease, floodwaters from Kerta Sari Village to Karang Dapo in Karang Dapo District had begun to recede although Biaro Village remained inundated, Rawas Ilir District was still flooded, and the Rupit–Rawas road access up to Mandi Village was passable. Relevant authorities are undertaking necessary actions to respond to the situation, support affected communities, and continue assessing and consolidating impact and damage data.
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, Cambodia, Lao PDR, Indonesia, Malaysia, Myanmar, the Philippines, Singapore, Thailand, and Viet Nam. As of this reporting period, Tropical Cyclone HAGUPIT was moving generally northwestward and was forecast to weaken into a remnant low by the evening of 11 May or early morning of 12 May 2026.
GEOPHYSICAL:
Four (4) 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), Semeru (alert level III), Dukono (alert level II), and Ibu (alert level II) in Indonesia, and Taal (alert level 1), Mayon (alert level 3), Bulusan (alert level 1), and Kanlaon (alert level 2) volcanoes 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 forecast over most of the equatorial region for the coming week, while drier-than-usual conditions are expected over parts of the eastern half of Mainland Southeast Asia. Warmer-than-usual temperatures are also predicted across most of southeastern Mainland Southeast Asia and the northeastern Maritime Continent. ENSO-neutral conditions are present, with most models predicting a transition to El Niño conditions during June–July 2026. However, there remains a possibility that ENSO-neutral conditions will continue. Meanwhile, the Indian Ocean Dipole (IOD) remains neutral, with models predicting the neutral phase to persist until June 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);
Cambodia: NCDM;
Indonesia: BNPB, BMKG, PVMBG;
Malaysia: NADMA,
Philippines: NDRRMC, PAGASA, DSWD, PHIVOLCS;
Thailand: DDPM;
Viet Nam: VDDMA;
Various news agencies.
