- Alert Level 2 | Activation of Alert Level 2 for the Mekong Sub-region
- With the activation of Alert Level 2 for the Mekong sub-region, from 15 Jan 2021 the regional haze situation will be updated thrice daily at 0200 UTC, 0500 UTC and 0900 UTC.
Regional Haze Situation
Latest Weather and Haze Situation
It was generally fair over most parts of the Mekong sub-region this morning except for some clouds observed over the southern parts of Cambodia and the northern and central parts of Viet Nam. Based on the overnight satellite pass, scattered hotspots were detected in Myanmar and isolated hotspots were detected in Cambodia and Thailand. Moderate haze occurrences were observed over Myanmar and the northern highlands of Thailand and thin smoke haze occurrences were observed for the rest of the Mekong sub-region based on latest satellite imagery. Unhealthy to Very Unhealthy air quality values were reported by stations in the northern highlands of Thailand and the eastern parts of the Mekong sub-region. Elsewhere in the ASEAN region, cloudy conditions with scattered showers were observed except for East Kalimantan and eastern parts of Peninsular Malaysia.
Weather and Haze Outlook
Dry conditions are expected to persist over most parts of the Mekong sub-region, except for parts of the central region and northern parts of Viet Nam where isolated showers are forecast. Under the prolonged dry conditions, the hotspots and haze situation over the Mekong sub-region are likely to remain elevated. The prevailing winds over the Mekong sub-region are forecast to be light and variable while the winds over the rest of the northern ASEAN region are forecast to blow from the northeast or east.
In the southern ASEAN region, isolated to scattered showers are forecast to persist except for parts of the Peninsular Malaysia where dry conditions are expected. While the hotspot activities are likely to be subdued due to the wet weather over most parts of the region, isolated hotspot and smoke haze activities may occur over areas with dry conditions. The prevailing winds over the region are forecast to blow from the west or northeast.
- 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.
- The regional haze situation is updated thrice daily at 0200 UTC, 0500 UTC and 0900 UTC upon activation of Alert Level 2. Updates at 0200 and 0500 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.