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MSS Wind Speed (km/h) MSS Rainfall (mm)

Latest Weather and Haze Situation

Dry weather persisted in the Mekong sub-region but there were isolated showers in parts of Lao PDR and Viet Nam. Persistent smoke haze continued to be observed over the northern sub-region. Scattered hotspots with smoke haze were detected in many parts of Myanmar, northern and central Thailand and northern Lao PDR. Isolated hotspots were also detected in southern Viet Nam. Unhealthy to Very Unhealthy air quality levels were reported by many stations in northern Thailand. Smoke haze was also observed to emanate from a cluster of hotspots in southern Lao PDR and northern Cambodia. In the southern ASEAN region, there were isolated hotspots with localised smoke plumes in Sabah.

Weather and Haze Outlook

Dry weather is forecast to persist in the Mekong sub-region but a gradual increase in shower activities can be expected. The prevailing winds are forecast to blow from the southeast or southwest. Hotspot activities and hazy conditions are likely to continue. In the southern ASEAN region, scattered showers can be expected over many areas. The prevailing winds are expected to blow from the northwest or northeast over areas north of the equator, and remain light and variable in direction south of the equator.

  • 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.