Regional Haze Situation
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Latest Weather and Haze Situation
Dry conditions were observed over many parts of the Mekong sub-region today. A few showers were observed over the central parts of Myanmar and the northern parts of Lao PDR. Clusters of scattered hotspots were detected in the southern parts of Myanmar, the western parts of Thailand, the northern parts of Lao PDR and the southern parts of Viet Nam. Isolated hotspots were detected elsewhere in the Mekong sub-region. Moderate to dense smoke plumes from southern Myanmar were observed to drift eastwards into the western Thailand. Moderate to dense smoke haze from northern Thailand was observed to drift northeast into northern Lao PDR and eastern Myanmar. Moderate to dense plumes from central Thailand were also observed to drift northeast into other parts of Lao PDR. Moderate to dense plumes from various parts of Lao PDR were observed to drift in the northeast direction into the northern and central parts of Viet Nam. Moderate smoke plumes from the southern parts of Viet Nam were observed to drift northwards into the southern parts of Cambodia. Moderate to dense smoke plumes were also observed in southwestern Cambodia, the central parts of Viet Nam and other parts of Myanmar. Air quality stations in the central parts of the Mekong sub- region are reporting Unhealthy levels while many stations in the northern parts of the sub-region are reporting Very Unhealthy levels.. The full extent of the hotspot situation over the northern parts of the Mekong sub-region could not be determined due to partial satellite pass.
Scattered showers were observed over the southern ASEAN region today. A few hotspots were detected in parts of Peninsular Malaysia, Borneo and Sulawesi. A slight localised smoke plume was observed in the eastern parts of Peninsular Malaysia.
Weather and Haze Outlook
Dry conditions are expected to prevail over most parts of the northern ASEAN region over the next few days except for showers forecast over the southern parts of the Philippines and 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 weaken to light and variable conditions.
Wet weather is forecast to continue over many parts of the southern ASEAN region. However, 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 remain light and variable in direction.
- 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.