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.
The forecast through June indicates that exceptional deficits will retreat from Quebec’s Ottawa-Gatineau Watershed; surpluses in Northern Ontario will transition to deficit; and deficits in the Middle Reaches of the Athabasca River Watershed in Alberta will become exceptional. Primarily moderate deficits are forecast across southern Manitoba and Saskatchewan. Intense surpluses will emerge in the Columbia River Basin in British Columbia, and deficits near Vancouver will persist but downgrade.
The forecast through June indicates that widespread water surpluses will persist in southeast China but will moderate overall. However, anomalies will be extreme to exceptional in Guangxi and into western Guangdong. Intense surpluses will persist in the Tibetan Plateau. Intense deficits are forecast for Mongolia and from western Inner Mongolia in China across central Xinjiang. Moderate deficits will emerge in North Korea, and moderate to extreme deficits are forecast for Japan.
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 June indicates that intense water deficits will emerge throughout much of India south and west of the Gangetic Plain. Intense surpluses are forecast in northern India, northern Pakistan, and much of Afghanistan. Anomalies will reach exceptional intensity in many of these regions. Deficits will emerge in southern Afghanistan and will be severe in the southwest. Surpluses are forecast in Nepal, Bangladesh along the Padma River and in the northeast, and nearby regions of India.
The forecast through June indicates water deficits in Baja, Mexico, coastal Sonora, southern Chihuahua, the Pacific Coast from southern Sinaloa through Chiapas, and the Yucatan Peninsula. Areas of surplus include Coahuila, the southern border of Chihuahua and Sonora, and pockets in the center of the country. Some moderate deficits are expected Central America, Haiti, and Dominican Republic.
The forecast through June indicates that water deficits in Brazil will shrink, with nearly normal conditions in Pará and Amazonas, but intense deficits are forecast for Mato Grosso, Tocantins, Goiás, Mato Grosso do Sul, Minas Gerais, western São Paulo, and along many rivers. Surpluses will increase in northeastern states. Exceptional deficits will trace a path along the Pacific Coast from Lima, Peru reaching almost to Santiago, Chile. Surpluses will increase and intensify in Paraguay.
The forecast through June indicates widespread water deficits of varying intensity throughout much of Europe, including exceptional deficits in Finland, Estonia, Latvia, Belarus north of Minsk, southern Sweden, and eastern Croatia. Deficits will moderate in Spain but intensify in central France, especially along the Loire and Dordogne Rivers. Surpluses are forecast for pockets of Switzerland and Austria, southern Umbria in central Italy, northwestern Sweden, and Murmansk, Russia.