Latest Weather and Haze Situation

Dry conditions were observed over most parts of the northern ASEAN region, except for the southern parts of the Philippines where there were a few showers. From the overnight satellite surveillance, isolated hotspots were detected in Viet Nam but scattered hotspots were detected in the rest of the Mekong sub-region. Based on recent satellite observations, moderate to dense transboundary smoke haze was observed to cover the eastern parts of Myanmar, the northern parts of Thailand and Lao PDR, and the central parts of Viet Nam. Moderate smoke haze was also observed over the western parts of Cambodia and the southeastern parts of Thailand. Slight smoke haze was also observed in the other parts of Myanmar. Some air quality stations over the northern and eastern parts of the Mekong sub-region measured Unhealthy level, with a few stations recorded Very unhealthy level. Ground observation stations in the northern parts of the sub-region also reported lowered visibility.

Weather conditions were partly cloudy over most parts of the southern ASEAN region, except for isolated showers observed over Sumatra. Hotspot activity in the region remained low.
Updated on 11:06 AM 27 April

Weather and Haze Outlook

While rainfall is expected over the southern parts of the Philippines, dry conditions are forecast to persist over the rest of the northern ASEAN region. The elevated hotspot activity and widespread transboundary smoke haze occurrence are expected to continue over the Mekong sub-region under this weather conditions. The prevailing winds over the Philippines are forecast to blow from the east or southeast, while the prevailing winds over the Mekong sub-region are expected to blow mostly from the south or southwest.

Wet weather is forecast to persist over the southern ASEAN region. While the overall hotspot activity is expected to remain suppressed, isolated hotspots with localised smoke plumes can still occur over drier areas. The prevailing winds over areas near the Equator are expected to be light and variable in direction, but the prevailing winds over areas south of the Equator are forecast to blow from the east or southeast.
Updated on 11:06 AM 27 April