Regional Haze Situation

Print this map
Map Filter Collapse
Select Date
icon-calendar
Overlays
MSSModerate Haze MSSDense Haze MSS 2500 ft Wind MSSLow Confidence Hotspot MSSMedium Confidence Hotspot MSSHigh Confidence Hotspot

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

Latest Weather and Haze Situation

Showers and cloudy conditions prevailed over most parts of the ASEAN region today except over the northern parts of the Mekong sub-region and Myanmar where relatively drier conditions were observed. Hotspot activities in the ASEAN region were mainly subdued. Few to isolated hotspots were detected in Mekong sub region mainly in Cambodia, Lao PDR, Myanmar and Thailand. No significant smoke plumes were observed from the satellite imagery.

Weather and Haze Outlook

The weather is forecast to be wet over most parts of the ASEAN region in the coming days, with drier conditions expected mainly over Myanmar and northern Mekong sub-region. The overall hotspot activity is likely to remain subdued, but few to isolated hotspots can still be expected in drier regions. The prevailing winds over the northern ASEAN region are forecast to be mainly northeasterlies or easterlies, while the prevailing winds over the southern ASEAN region are expected to be 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.

Seasonal Forecast for December 2022 – February 2023

Summary of Outlook

The Northeast Monsoon has started in parts of the ASEAN region, which typically becomes fully established by the end of December. As the Northeast Monsoon sets in, the prevailing winds gradually transition into mainly northeasterlies over northern ASEAN and northwesterlies for the southern ASEAN regions. With the monsoon rain band located close to the Equator, an increase in shower activities over the equatorial ASEAN region can be expected.

For the December 2022 to February 2023 (DJF) period, an increased chance of above-normal rainfall is predicted for much of the eastern and northwestern Maritime Continent, apart from an increase in chance of below-normal rainfall predicted over parts of the equatorial region. La Niña conditions are predicted to weaken in early 2023, potentially returning to ENSO neutral conditions during March to April 2023. La Niña event tends to bring wetter conditions to much of the ASEAN region. The negative Indian Ocean Dipole (IOD) is expected to return to neutral by the end of 2022. Near-normal temperature conditions are predicted for much of the ASEAN region, with parts of eastern Maritime Continent, the equatorial region, and Myanmar favoured to experience above-normal temperatures.

The overall hotspot and smoke haze situation is likely to stay subdued in the DJF period, with above-normal rainfall forecast for much of the southern ASEAN region throughout the forecast period. Hotspot and smoke haze activities can still be expected to progressively intensify over the fire-prone areas in the northern ASEAN region towards the end of December 2022 when the traditional dry season sets in, especially over the northwestern parts of the Mekong sub-region where below-normal rainfall is forecast. Isolated hotspots and localised smoke plumes may also occur over parts of the southern ASEAN region experiencing occasional periods of drier weather conditions, which typically occur during the dry phase of the Northeast Monsoon from late January to February.

Click here for details

ASEAN Climate Outlook Forum

The ASEAN Climate Outlook Forum (ASEANCOF) is an avenue to collaboratively develop consensus-based seasonal climate outlooks and related information on a regional scale.

18th ASEAN COF

Related Website

ASEAN Haze Online

Recent Updates

02

Dec

Seasonal Forecast for December 2022 – February 2023
The Northeast Monsoon has started in parts of the ASEAN region, which typically becomes fully established by the end of December …
More details

30

Nov

19th ASEAN COF (Nov 2022, Online)
The ASEAN Climate Outlook Forum (ASEANCOF) is an avenue to collaboratively develop consensus-based seasonal climate outlooks and related information on a regional scale. The forum’s outlook and its activities contribute significantly to one of the key roles of …
More details

25

Nov

Subseasonal Weather Outlook (28 November – 11 December 2022)
Wetter conditions are predicted over much of eastern and southern Mainland Southeast Asia, and the Philippines in the next fortnight (28 November – 11 December). Wetter conditions are also predicted over the …
More details