The forecast through April indicates that water deficits will downgrade in the southern half of the continent, becoming primarily moderate across the central breadth and mild in the south. Deficits in the north will increase and intensify, with moderate to extreme deficits in the Sahara and deficits reaching exceptional intensity in parts of the Sahel and into western Ethiopia. Intense deficits will linger in Cameroon, Equatorial Guinea, and Gabon. Surpluses will persist in western Tanzania.
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Regions forecast to have significant water deficits for the 12-month period from October 2018 through September 2019 include: Quebec (Canada), Finland, Venezuela, Somalia, South Africa, India, Thailand, Cambodia, and Australia. Areas with a forecast of significant water surplus include: Texas (US), Paraguay, Uruguay, Tanzania, and China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 1 February 2019.
Regions forecast to have significant water deficits for the 12-month period from September 2018 through August 2019 include: Quebec (Canada), Chile, Finland, Albania, northern Africa, India, western Cambodia, and southeastern Australia. Areas with a forecast of significant water surplus include: Texas and Pennsylvania (US), Paraguay, western Tanzania, Tomsk and Kemerovo (Russia), and Heilongjiang (China). This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 7 December 2018.
The December Outlook indicates exceptionally warmer than normal temperatures, 40+ years return period, in Southeast Asia. Much wetter than normal conditions are forecast for the Yangtze River Basin in China.
The forecast through January indicates that exceptional deficits in Africa will shrink considerably, but moderate to severe deficits are forecast across much of the north. Areas of intense deficit include southeastern Algeria; the Nile River, the White Nile and parts of the Blue Nile; northwestern and southeastern Nigeria; western Ethiopia; and northern Democratic Republic of the Congo into Central African Republic. Areas of surpluses include south-central Chad and Liberia.
The forecast through December indicates that intense deficits will shrink considerably across northern Africa but emerge across the southern Sahara and into the Sahel. Intense deficits are forecast for the Nile River and western Ethiopia. Mild deficits are forecast for much of Africa’s southern half. Areas of surplus include southern Mali, Sierra Leone, Liberia, Burkina Faso, Ghana, coastal and northeastern Nigeria, south-central Chad, Republic of the Congo, Tanzania, and southern Kenya.
Regions forecast to have significant water deficits for the 12-month period from July 2018 through June 2019 include: Germany, Finland, southern Iraq, western Cambodia, Mato Grosso and São Paulo (Brazil), Karachi (Pakistan), and southeastern Australia. Areas with a forecast of significant water surplus include: Pennsylvania and Iowa (US), Uruguay, Myanmar, Vietnam, and Heilongjiang (China). This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 11 October 2018.
Warmer than normal temperatures are forecast for a vast stretch of Russia east of the Ural Mountains, through the Central Siberian Plateau and leading south to the Sea of Japan, where anomalies will be intense. Similar conditions are expected across the border in China’s Northeastern Plain. The US Southwest can expect much wetter than normal conditions.
The forecast through November indicates extreme to exceptional water deficits in the north from southeastern Algeria to the Red Sea, and deficits nearly as intense for western Ethiopia, the Atbara River, the Blue and White Nile Rivers, and the intersection of Central African Republic, Democratic Republic of the Congo, and South Sudan. Deficits may be severe on the Kafue River in Zambia. Scattered surpluses are forecast around West Africa and intense surpluses in Tanzania.
Though intense water deficits will persist in northern Africa over the next few months, exceptional deficits will shrink in the north and along the Red Sea, and will nearly disappear from the rest of the continent. Intense deficits will persist in Zambia’s Kafue River watershed. Areas of surplus include: Tanzania, Kenya, eastern Uganda, some countries along the northern Gulf of Guinea, central Chad, and northwestern Zambia. Surpluses will be intense in East Africa.