Regional Haze Situation
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Latest Weather and Haze Situation
Dry and cloudy conditions prevailed over most parts of the northern ASEAN region. Widespread hotspots were detected in Cambodia while isolated to scattered hotspots were detected elsewhere in the Mekong sub- region. Moderate to dense smoke plumes were observed to emanate from clusters of hotspots in many parts of Cambodia. Moderate to dense smoke plumes emanating from southern Lao PDR and southern Viet Nam can be seen drifting in the southwesterly direction into northern and eastern Cambodia respectively. Moderate smoke plumes were also observed emanating from several hotspots in northern, eastern and central Thailand, with some of the smoke plumes in central Thailand drifting into parts of southern Myanmar. Moderate haze was also observed over large parts of Myanmar. Many air quality stations in the northern, central and eastern Mekong sub-region reported Unhealthy levels, with a few stations reporting Very Unhealthy levels. However, the full extent of the hotspot and smoke haze situation in the northeastern parts of the sub-region could not be determined due to extensive cloud cover.
Elsewhere, showers were observed over most part of the southern ASEAN region and hotspot activities were subdued for the region.
Weather and Haze Outlook
In the next few days, dry conditions are expected to persist over the Mekong sub-region, except over the northeastern coast of Viet Nam where isolated showers are forecast. The hotspot and smoke haze activities may intensify over fire-prone regions experiencing prolonged dry conditions, with an increased risk of transboundary haze. The prevailing winds north of the Equator are expected to blow from the northeast to east, except over the northern parts of the Mekong sub-region where the winds are forecast to be light and variable.
Meanwhile, shower activities are expected over the southern ASEAN region in the coming days and the hotspot activity in the region is expected to remain low. The winds south of the Equator are forecast to be west to northwest.
- 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.