REGIONAL SUMMARY:
For the thirty-seventh week of 2022, a total of 25 disasters (1 drought, 16 floods, 4 landslides, and 4 wind-related) affected the region. Indonesia, Malaysia, the Philippines, Thailand, and Viet Nam have reportedly been affected. Badan Nasional Penanggulangan Bencana (BNPB) reported floods, landslides, and wind-related events caused by heavy rainfall, strong wind, overflowing of the rivers, and unstable soil condition in Aceh, North Sumatra, Jambi, South Sumatra, West Java, Central Java, West Kalimantan, and South Kalimantan Province, and Drought in Bekasi Regency in West Java. Agensi Pengurusan Bencana Negara (NADMA) reported that flooding occurred in Johor, Melaka, and Perak State, Malaysia. The Philippines’ National Disaster Risk Reduction and Management Council (NDRRMC) reported flooding caused by localised thunderstorms in Bangsamoro Autonomous Region in Muslim Mindanao (BARMM). The Department of Disaster Prevention and Mitigation (DDPM) of Thailand reported floods in Singburi, Rayong, and Bangkok, Thailand. Lastly, The Viet Nam Disaster Management Authority (VNDMA) reported that floods and landslides in Ha Giang and Nghe An, Viet Nam.
HIGHLIGHT:
According to DDPM, from the 11th to the 15th of September, heavy rainfall and overflowing of the rivers have caused floods in Singburi, Rayong, and Bangkok. In total, the events have affected 39.2K families and no injuries or deaths have been reported by DDPM. According to DDPM as of 16 September, 0600 HRS UTC+7, flood depth has been reported to have increased in Singburi and to have started to decrease in Rayong and Bangkok. Meanwhile, in Ketapang Regency, West Kalimantan (Indonesia), flooding and landslide caused by heavy rainfall and overflowing of Jelai river on 13 September had affected 4.3K families (14.7K persons), displaced 36 persons, and damaged 3.9K houses, and 1 educational facility as reported by BNPB. Local disaster management agencies coordinate with relevant agencies to carried out necessary actions and continue to monitor and assess the situation.
HYDRO-METEO-CLIMATOLOGICAL:
For the past week, data from the ASEAN Specialised Meteorological Centre (ASMC) showed high 7-day average rainfall spreading across Papua, southeast Sulawesi, central and western Kalimantan, and northern Sumatra in Indonesia; and South Central coast of Viet Nam. As of reporting time, TC NANMADOL is forecasted to move away from and not directly affect the ASEAN region (JTWC).
GEOPHYSICAL:
Three (3) significant earthquakes (M?5.0) were recorded in the region by Indonesia’s Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) and Philippine Institute of Volcanology and Seismology (PHIVOLCS). Mount Semeru (alert level III), Ibu (alert level II), Dukono (alert level II), and Ili Lewotolok (alert level III) in Indonesia, and Taal (alert level 1), Mayon (alert level 1), and Kanlaon Volcano (alert level 1) in the Philippines reported recent volcanic activity according to the 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 expected over most of the southern ASEAN region. Drier conditions are expected over parts of northeastern Mainland Southeast Asia. Cooler conditions are expected over parts of the central Maritime Continent. Warmer conditions are expected over parts of the southeastern Maritime Continent. For the regional assessment of extremes, there is a small increase in chance for a very heavy rainfall to occur in the parts of southern and southeastern Maritime Continent; and small increase in chance for extreme hot conditions to occur in Southeastern Indonesia and the Philippines. La Niña conditions have been present. At the seasonal timescale, La Niña events tend to bring wetter conditions to much of the ASEAN region. A negative Indian Ocean Dipole (IOD) is now established. Negative IOD tends to bring wetter conditions to much of the southern ASEAN region.
Sources:
ASEAN Disaster Monitoring & Response System (DMRS); ASEAN Specialised Meteorological Centre (ASMC); Joint Typhoon Warning Centre (JTWC);
Indonesia: BNPB, BMKG, PVMBG;
Malaysia: NADMA;
Philippines: NDRRMC, PAGASA, PHIVOLCS;
Thailand: DDPM;
Viet Nam: VNDMA;
Various news agencies.
