Regional Haze Situation
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Latest Weather and Haze Situation
It was dry and cloudy over the northern ASEAN region today. Clusters of scattered hotspots were detected in Cambodia, while isolated hotspots were detected elsewhere in the Mekong sub-region. Slight to moderate localised smoke plumes were observed emanating from isolated hotspots in the central and northern parts of Myanmar, the southern parts of Viet Nam, the central parts of Lao PDR, the central and eastern parts of Thailand, as well as the northern and eastern parts of Cambodia. Many air quality stations in the central parts of the Mekong sub-region reported Unhealthy levels, with some reporting Very Unhealthy levels. However, the hotspot and smoke haze situation over the northeastern and southern parts of the Mekong sub-region could not be fully determined due to cloud cover.
Wet weather conditions were observed over the southern ASEAN region, and no hotspots or significant smoke plumes were observed from satellite imagery.
Weather and Haze Outlook
In the coming days, the Mekong sub-region is forecast to remain dry and the hotspot and smoke haze situation is expected to intensify, increasing the likelihood of transboundary haze occurrence in the sub-region. The prevailing winds over the northern ASEAN region are likely to blow from the northeast to east, apart from the Mekong sub-region where light and variable winds are forecast.
Over the southern ASEAN region, showers are expected to continue, which should keep the hotspot activity low. The prevailing winds over the southern ASEAN region are likely to blow from the west to north.
- 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.