The forecast for May 2024 expects significant water deficits for the 12-month period of February 2024 through January 2025 in South America, Africa, and Canada. Areas expected to experience surplus include central to eastern Africa, northern Australia, Europe, and Southeast Asia.
The forecast anticipates exceptional deficits to continue in northern and northwestern African countries, as well as some central and southern countries. Intense surpluses are expected to emerge in areas throughout the Sahel.
The forecast indicates that intense surplus will occur in most northern and central regions of Australia, with exceptional deficits diminishing in portions of the country near its western coast. Exceptional deficits are expected to emerge in Tasmania, as well as in pockets across New Zealand.
The forecast indicates that exceptional deficits will mostly dissipate in northeastern China, but continue in northern, southern, and northwestern portions of the country. Exceptional surplus is expected to diminish in southwestern China, though moderate to severe surpluses may continue in eastern regions of the country.
The forecast through September indicates that water surpluses will retreat from the Pearl River Basin, downgrade in the Yellow River Basin, and moderate in the lower and middle regions of the Yangtze. Deficits will shrink in Mongolia and Xinjiang but intensify in Yunnan and Guangdong. Surpluses will increase in North Korea.
The forecast through June indicates that water surpluses will retreat in the Lower and Middle Yangtze Basin, transitioning to moderate deficits in the Lower Basin. Surpluses will increase in the Pearl River Basin and Southeast China. Deficits will emerge in eastern Mongolia, and Honshu and Hokkaido, Japan.
Recent exceptional deficits in Mongolia, the Korean Peninsula, and Liaoning are expected to moderate in the near term – September through November. Widespread surpluses are expected to persist in southern China from Poyang Lake in Jiangxi southwest through Hunan into Guangxi and Yunnan, and the western Pearl River Delta, though the extent of exceptional surpluses will diminish considerably. The coastal southeast will transition from surplus to moderate deficit, a trend which is forecast to continue through May. After November, surpluses in Jiangxi through Yunnan will continue to diminish.
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