Regional Haze Situation
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Latest Weather and Haze Situation
Dry conditions were observed over the Mekong sub-region today except for a few showers observed over the eastern parts of the Mekong sub-region. Clusters of scattered hotspots were detected in the northern parts of Lao PDR, the southern parts of Viet Nam and the western parts of Thailand. Isolated hotspots were detected elsewhere in the Mekong sub-region. Moderate to dense smoke plumes from southern and eastern Myanmar were observed to drift eastwards into the western and northern parts of Thailand respectively. Isolated to dense plumes from the northern and central parts of Thailand were observed to drift into the northern parts of Lao PDR. Smoke plumes from the eastern parts of Thailand were also observed to drift eastwards into the central parts of Lao PDR. Moderate to dense smoke plumes from various parts of Lao PDR were observed to drift eastwards into the northern and central parts of Viet Nam. Moderate smoke plumes from the southern parts of Viet Nam were observed to drift north into the southern parts of Cambodia. Moderate smoke plumes were also observed in the western parts of Myanmar, the southern parts of Lao PDR and the southwestern parts of Cambodia. Many air quality stations in the central and northern parts of the Mekong sub-region are reporting Unhealthy levels, with many stations in the northern parts of the sub-region reporting Very Unhealthy levels.
For the southern ASEAN region, isolated showers were observed today except for the western parts of Borneo where it was observed to be drier. A few hotspots were detected in Sumatra, Peninsular Malaysia as well as Sabah and Sarawak. No significant smoke plumes were observed. The hotspot and haze situation could not be fully determined due to extensive cloud cover over the region.
Weather and Haze Outlook
Dry conditions are forecast to continue over many parts of the northern ASEAN region with the exception of a few showers over the eastern parts of the Mekong sub-region as well as the northern parts of Myanmar. Prolonged dry conditions over parts of the Mekong sub-region can lead to persistent and extensive hotspot and smoke haze activities, with a continued risk of severe transboundary haze occurrences. The prevailing winds over the Mekong sub-region are forecast to blow mainly from the southwest to west, while the prevailing winds over the Philippines are forecast to be light and variable in direction.
Isolated showers are expected to continue over many parts of the southern ASEAN region except for the northeastern parts of Peninsular Malaysia and the northern parts of Borneo where drier conditions are forecast. Hotspots and localised smoke plumes can still emerge in areas of the region experiencing relatively drier conditions. The prevailing winds over the southern ASEAN region are forecast to blow from the northeast or southeast.
- All maps are to be used solely for displaying meteorological/geophysical information, and not for any other purpose. All maps are not to scale and for illustrative purpose only.
- The hotspots depicted on the map are derived from the NOAA satellite and they represent locations with possible fires. Hotspots may go undetected due to cloudy conditions or incomplete satellite pass.
- At Alert Level 0 and Alert Level 1, the regional haze situation is updated once a day at 0900 UTC. The regional haze situation is updated more frequently at 0300 UTC and 0900 UTC upon activation of Alert Level 2 or Alert Level 3. Updates at 0300 UTC display hotspot information from night-time passes of the NOAA-20 satellite. Fewer hotspots were typically detected at night as fire activities usually peak during the day.
- Reprocessed satellite data will be availed at a later timing. The hotspot information derived from satellite data reprocessed may differ slightly from that received near real-time but reprocessing is necessary for better quality data.
- The 2500 ft winds (depicted by arrows) are model analysis winds.