Regional Haze Situation
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Latest Weather and Haze Situation
Dry conditions were observed over parts of southern and central Myanmar, northern and central Thailand, northern Lao PDR, as well as northern and southern Viet Nam. Showers were observed elsewhere in the northern ASEAN region. Isolated to scattered hotspots were detected in the Mekong sub-region. Moderate transboundary smoke plumes were observed to drift from southern Myanmar into central Thailand, from eastern Thailand into northern Lao PDR, and from southern Viet Nam into southern Cambodia. Moderate smoke plumes were also observed over central and southern Myanmar, central Thailand, and southern Viet Nam. Due to cloud cover, the full extent of the hotspot and smoke haze situation over the Mekong sub-region could not be determined.
It was wet and cloudy over many parts of the southern ASEAN region, except over central and southwestern Borneo and northern Sumatra where it was relatively drier. Few hotspots were detected in Sumatra and Borneo. Slight localised smoke plumes were observed to emanate from hotspots over northeastern Peninsular Malaysia. Slight to moderate localised smoke plumes were also observed over northern Sarawak and eastern Kalimantan. The full extent of the hotspot and smoke haze situation over the southern ASEAN region could not be determined due to cloud cover.
Weather and Haze Outlook
Showers are forecast over the northern and eastern parts of the Mekong sub-region and the Philippines over the next few days. Relatively drier conditions are likely over the rest of the sub-region. While the showers may bring some improvement to the overall hotspot and smoke haze situation, elevated hotspots and smoke haze activities, with a risk of transboundary haze occurrence, may continue over dry areas. The prevailing winds over the northern ASEAN region are expected to gradually weaken and become variable in direction, except over the Philippines, where the winds are forecast to blow from the east.
In the southern ASEAN region, showers are likely to continue over most areas, except for over Peninsular Malaysia, the northern parts of Sumatra, and the eastern parts of Borneo where relatively drier weather is forecast. Isolated hotspots and smoke plumes may still occur over drier areas. The prevailing winds over the southern ASEAN region are expected to blow mainly from the northeast or east.
- 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.