Regional Haze Situation
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Latest Weather and Haze Situation
The northern ASEAN region remained dry today, except for some showers observed over parts of northern, southern and eastern Mekong sub-region. Clusters of widespread hotspots were detected in Lao PDR and Myanmar, while isolated hotspots were detected elsewhere in the Mekong sub-region. Moderate to dense transboundary haze was observed to drift eastwards from eastern Myanmar into northern Thailand and northern Lao PDR, from northern Thailand into northern Lao PDR, and from northern Lao PDR into northern Viet Nam. Moderate smoke plumes were observed to emanate from isolated hotspots over large parts of Myanmar, parts of Lao PDR, eastern and western Thailand, northern and southern Cambodia and southern Viet Nam. Many air quality stations in the northern and eastern parts of the Mekong sub-region reported Unhealthy levels, with a few stations in the north reporting Very Unhealthy levels. Low visibility was reported by ground observations in the northwestern parts of the sub-region. The full extent of the hotspot and smoke haze situation over the northern, central and eastern parts of the Mekong sub-region cannot be determined due to thick cloud cover.
Isolated showers were observed over the southern ASEAN region. Few to isolated hotspots were detected in eastern Kalimantan, Sabah, Peninsular Malaysia and Sumatra. Moderate localised smoke plumes were observed emanating from a few hotspots in eastern Kalimantan, where it was relatively drier.
Weather and Haze Outlook
Persistent dry weather is forecast over the northern ASEAN region over the next few days, apart from some showers in the eastern parts of the Mekong sub-region and the northern parts of the Philippines. The elevated hotspot and transboundary haze situation is expected to continue, especially over the northern parts of the sub-region. The prevailing winds over the northern ASEAN region is likely to blow from the east to southwest.
The southern ASEAN region is forecast to remain wet, with the overall hotspot and smoke haze situation expected to be subdued. However, few to isolated hotspots with localized smoke plumes may still occur. The prevailing winds over the southern ASEAN region are likely to be 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.