The forecast through December indicates water surplus in Myanmar, Laos, eastern Cambodia, and Vietnam. Deficits are expected around Tonlé Sap, Cambodia, and in Malaysia, Sumatra, Java, Indonesian Borneo, northern New Guinea, and the eastern Philippines. Deficits will be extreme in Sumatra and Java.
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Southeast Asia & Pacific
The forecast through November indicates that water surpluses will be the dominant anomaly in Southeast Asia, while deficits emerge in much of Malaysia and Indonesia. Deficits will be exceptional in Malaysia. Surpluses are expected to reach exceptional intensity on the Mekong River through eastern Cambodia. Thailand will transition from intense deficit to surpluses in the north and generally normal conditions in the south.
The forecast through October indicates that water deficits will shrink and downgrade considerably in Thailand, and surpluses will shrink and downgrade in Cambodia, Laos, and Vietnam. Surpluses in Myanmar will remain intense in the west and south. Severe deficits will emerge in Malaysia and Indonesia.
The forecast through September indicates that water deficits will downgrade in Thailand and nearly disappear in Cambodia. Surpluses will shrink and downgrade in Southeast Asia leaving moderate anomalies in southern Cambodia and in the Mekong Delta. Moderate to severe deficits will emerge in Indonesian Borneo, and deficits in Papua New Guinea will diminish.
The forecast through August 2019 indicates that intense water deficits in Thailand and Cambodia will disappear leaving mild deficits or nearly normal conditions. Surpluses will shrink considerably in Myanmar, Laos, Vietnam, and Indonesia, transitioning to deficits in Borneo, Sumatra, and Java. Deficits will downgrade in Papua New Guinea but will be severe.
The forecast through July indicates that water deficits in Thailand and Cambodia will downgrade from exceptional but remain widespread and severe in Thailand and moderate in Cambodia. Prior surpluses in Southeast Asia and Indonesia will nearly disappear as deficits emerge. Severe to extreme deficits are forecast for peninsular Thailand, Malaysia, Borneo, pockets of Sumatra, southern Philippines, and Papua New Guinea.
The forecast through June indicates that water deficits in Thailand and Cambodia will downgrade but will be widespread and severe, and deficits will emerge in much of Southeast Asia. Moderate to severe deficits are expected in the Philippines, northeastern Borneo, and scattered pockets of Indonesia. Exceptional deficits will persist around the Gulf of Papua in Papua New Guinea. Surpluses will downgrade slightly in north-central New Guinea around Jayapura.
The forecast through May indicates that exceptional deficits will shrink in Cambodia and Thailand, but deficits will remain widespread and severe deficits will emerge in northern Thailand. Intense deficits will emerge in southern Myanmar, the Malay Peninsula, northern Sumatra, central Laos, southern Vietnam, Philippines, and northeastern Borneo. Deficits will persist in Papua New Guinea. Areas of surplus include western Myanmar, Indonesian Borneo and Java.
The forecast through April indicates that exceptional water deficits in western Cambodia will shrink slightly, deficits in Thailand will downgrade, and moderate deficits will emerge in northern Myanmar. Deficits are also forecast for the Philippines, eastern Borneo, northern Sulawesi, pockets of Sumatra, and central New Guinea. Moderate to severe surpluses are forecast for much of Vietnam with exceptional conditions in the north including Hanoi, and in north-central Laos.
The forecast through March indicates that exceptional water deficits in western Cambodia will shrink somewhat but persist, and deficits in Thailand will downgrade slightly but remain widespread. Other areas of deficit include the Philippines, eastern Borneo, Sumatra’s southern tip, and Papua New Guinea. Surpluses are forecast for much of Vietnam, north-central Laos, most of Sumatra, western Indonesian Borneo, and pockets of Java.