Review of Regional Haze Situation for June 2024
1.1 Southwest Monsoon conditions were fully established over the ASEAN region in June 2024. Over the Philippines and much of the southern ASEAN region, the prevailing winds blew mainly from the southeast. The prevailing winds over the Mekong sub-region were mostly southwesterly or westerly while the regions close to the Equator experienced winds that were mostly light and variable in direction (Figure 1).
1.2 During the review period, rainy weather prevailed over most parts of the ASEAN region. In particular, moderate to heavy showers fell on several days over the Philippines, southern Myanmar and northern Viet Nam. Drier conditions were observed over Java and the Lesser Sunda Islands (Figure 1).
1.3 Hotspot activity in the ASEAN region was mostly subdued in June 2024 due to the prevailing wet weather conditions. The total number of hotspots were lower or comparable to previous years of the same period (Figure 2 and 3).
1.4 In June 2024, a few to isolated hotspots were detected in the ASEAN region, particularly in the southern and central parts of Viet Nam where the fires were more persistent and intense(Figure 4 and 5). There was no significant smoke haze observed via satellite imagery and ground reports.
