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 except for a few showers observed over the central parts of the Mekong sub- region and the southern parts of Myanmar. Clusters of scattered hotspots were detected in the northern parts of Lao PDR and the southern parts of Viet Nam. A few to isolated hotspots were detected elsewhere in the northern ASEAN region. Moderate to dense smoke plumes from southern Myanmar were observed to drift eastwards into western Thailand. Moderate to dense plumes from the northern parts of Lao PDR were observed to drift in the southeast direction into the northern parts of Thailand and Viet Nam. Moderate plumes from the southern parts of Viet Nam were observed to drift north into the southern parts of Cambodia. Moderate to dense smoke haze was also observed in other parts of Myanmar and Thailand. Many air quality stations in the central parts of the Mekong sub- region are reporting Unhealthy levels while some stations in the northern parts of the sub-region are reporting Very Unhealthy levels. The hotspot and haze situation could not be fully determined due to cloud cover over the central and eastern parts of the Mekong sub-region.
Isolated showers were observed over the southern ASEAN region today except for drier conditions observed over the northern and southern parts of Borneo. A few hotspots were detected in parts of Borneo, Sulawesi and Java. Moderate smoke plumes were observed in Brunei, Sabah and Sarawak. Slight localised smoke plumes were also observed in the northeastern parts of Peninsular Malaysia. The hotspot and haze situation could not be fully determined due to extensive cloud cover over many parts of the southern ASEAN region.
Weather and Haze Outlook
In the coming days, dry conditions are forecast to continue over many parts of the northern ASEAN region except for the possibility of showers in the central and eastern parts of the Mekong sub-region. Escalated hotspot activity and smoke plumes may continue with a risk of transboundary haze occurrence, especially in areas of the sub-region still facing prolonged drier conditions. The prevailing winds over the Mekong sub-region are forecast to blow from the southwest to west while winds over the Philippines are forecast to blow mainly from the northeast.
Meanwhile, over the southern ASEAN region, isolated showers are forecast with the exception of relatively drier conditions over the north parts of Peninsular Malaysia as well as over Sarawak and Sabah. Hotspots and localised smoke plumes can occur in areas experiencing 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.