Regional Haze Situation
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Latest Weather and Haze Situation
Widespread showers were observed over most parts of the Mekong sub-region today with the exception of drier conditions observed over the northwestern and southeastern parts of the Mekong sub-region as well as the northern parts of the Philippines. Scattered hotspots were detected in the central parts of Myanmar and the northern parts of Lao PDR while isolated hotspots were detected elsewhere in the Mekong sub-region. Moderate to dense smoke plumes in the central parts of Lao PDR were observed to draft eastwards into the central parts of Viet Nam. Slight to moderate smoke haze was detected in the northern parts of Myanmar. Some of the air quality stations in the northern and eastern parts of the Mekong sub-region are reporting Unhealthy levels, with a few stations reporting Very Unhealthy levels. The hotspot and smoke haze situation could not be fully determined due to extensive cloud cover over the northern ASEAN region.
In the southern ASEAN region, widespread showers were also observed today. A few hotspots were detected in Sumatra and Peninsular Malaysia but no significant smoke plumes were detected.
Weather and Haze Outlook
Over the next few days, showers are forecast to persist over many parts of the northern ASEAN region, with the exception of relatively drier conditions forecast over the northern parts of the Philippines. Drier conditions may be expected to return over parts of the northern ASEAN region during the next week. The wet weather may provide some relief to the hotspot and haze situation in the Mekong sub-region, but smoke haze may persist in parts of the sub-region under relatively prolonged drier conditions, with a potential of transboundary haze occurrence. The prevailing winds over the northern ASEAN region are forecast to blow from the northeast or southeast while winds over the northern parts of the Mekong sub-region are forecast to be light and variable in direction.
In the southern ASEAN region, wet weather is forecast to persist. The hotspot and haze situation is expected to remain subdued over this region. The prevailing winds over the southern ASEAN region are forecast to be generally 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.