The forecast through February 2026 expects deficits in Central and Eastern Europe, Central Asia, and the Levant. Surpluses are expected in the western Amazon, the Sahel and southern Africa, and northeastern Australia.
Severe to exceptional surpluses will remain throughout Queensland. Exceptional deficits will occur in portions of Victoria, Western Australia, Tasmania, and New Zealand.
Exceptional deficits will occur in northwestern and southeastern China, widespread throughout the Yangtze River Basin. Isolated pockets of surplus will affect portions of central and northeastern China.
Exceptional surpluses throughout Maritime Southeast Asia will mostly diminish, though pockets of severe to exceptional deficits will persist in portions of the Philippines, Indonesia, Papua, West Papua, and New Guinea.
The forecast through July indicates that widespread, exceptional water deficits will shrink considerably. Severe to exceptional deficits are, however, forecast in northern Australia from the Kimberly region through Top End, Northern Territory and along the southern shore of the Gulf of Carpentaria. Deficits will also be intense in the southern tip of Western Australia, Tasmania, New Caledonia, and North Island, New Zealand.
ISciences is transitioning production of our monthly Global Water Monitor & Forecast Watch List reports to use outputs from a new version of our Water Security Indicator Model (WSIM). WSIMv2 makes use of more recent and publicly available input datasets and uses a revised methodology for calculating composite water anomalies.
Regions forecast to have significant water deficits for the 12-month period from February 2019 through January 2020 include: French Guiana, Brazil, Finland, Latvia, Egypt, Somalia, Angola, and Thailand. Areas with a forecast of significant water surplus include: United States, Paraguay, northern Iraq, western Iran, Afghanistan, Tanzania, and southeastern China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 10 May 2019.
The May Outlook includes a forecast of exceptional warm anomalies in a number of places including northern Alaska; the State of São Paulo, Brazil and through the Andes from Colombia through northern Chile; and, around the Gulf of Guinea in Africa. Central Tanzania is expected to be much wetter than normal. Widespread, moderate to severe wet anomalies are forecast in a broad path in the U.S. from Michigan through Louisiana.
The forecast through June indicates that water surpluses in the Ob River Basin of Russia will shrink and moderate, and intense deficits will emerge in the Tom River Basin’s southern reaches. Intense deficits will also emerge in the Yenisei River Basin. Severe deficits are forecast for western Kazakhstan, and eastern Uzbekistan’s Fergana Valley. Surpluses are expected in eastern Kyrgyzstan and southern Turkmenistan.
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