The forecast through August 2019 indicates moderate water deficits across northern Africa with large pockets of exceptional deficit in Libya, Egypt, and Sudan. The southern Sahara and the Sahel will be near-normal, and deficits in the Horn will downgrade. Mild deficits will cover much of southern Africa, punctuated by surpluses in East Africa and some pockets of intense deficit from Cameroon through Republic of the Congo, in southern Angola, northern Namibia, and western Botswana.
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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.
The forecast through July indicates that exceptional water deficits across northern Africa will diminish, but intense deficits will persist in Libya, Niger, Egypt, and Sudan. Deficits will downgrade in Gabon and southern DRC but remain severe. Deficits will persist in western Zambia and are expected to be extreme on the Kafue River. Relatively mild deficits are forecast for southern Africa. Intense surpluses will persist in Tanzania, Kenya, northern Uganda, and northern Madagascar.
Significant water deficits will continue to emerge across the north, though exceptional deficits will shrink. Deficits will diminish in central and southern Africa but remain intense in Gabon, southeastern DRC, Zambia, and west-central Madagascar. Southern Africa will downgrade to mild deficit. Surpluses will persist in southernmost Sudan, downgrade along the White Nile, increase in Kenya, and emerge in eastern Uganda, Ethiopia, and along the Jubba and Shabelle Rivers through southern Somalia. Exceptional surplus will persist in Tanzania.
Exceptional water deficits are expected to diminish considerably, leaving severe conditions across the north but relatively moderate conditions in the south. Some intense deficits are forecast for western Mauritania, southwestern Burkina Faso, the Chinko Nature Reserve in Central African Republic, southwestern Namibia, and Cape Town, South Africa. Surpluses are forecast for southeastern Sudan, northeastern South Sudan, the Niger Delta, Gabon, north-central Uganda, eastern Tanzania, Okavango Delta in Botswana, and the central border between Botswana and South Africa.
Though there are several regions with a July forecast of significant precipitation anomalies - India's Western Ghats will be much drier than normal and northern Argentina will be much wetter - the temperature forecast has more severe and widespread anomalies. The African Sahel, Saudi Arabia, and Mongolia are among the numerous regions forecast to see much warmer than normal temperatures.
The forecast for June 2017 indicates much warmer than normal temperatures across northern South America, the Sahel, coastal West Africa, the Arabian Peninsula, Indonesia, and other regions. Precipitation anomalies include much wetter than normal conditions in Gabon, northern Zambia, and Tanzania; and much drier than normal conditions in Ethiopia and Western Australia.
The extent of exceptional deficits across the continent will diminish through April, but moderate to extreme deficits will persist across northern Africa and across Africa’s mid-section from Gabon to southern Somalia. Deficits will diminish considerably in Madagascar though persist in the south. Surpluses are forecast in the Okavango Delta in northern Botswana, southern Zambia, Zimbabwe, and western Mozambique. The forecast for May through July indicates a downgrade in the intensity of deficits in the southern Sahel and an increase in the intensity of deficits across northern Africa where extreme to exceptional deficits are expected to emerge in eastern Algeria, northern Niger, Libya, Egypt, and northern Sudan.
The extent of exceptional water deficits across the continent is forecast to diminish through March, though extreme deficits will continue to emerge in some areas of the Sahel. A large pocket of surplus is forecast to emerge at the intersection of Angola, Namibia, and Botswana. From April through June the intensity of deficits across northern Africa will increase while diminishing from the southern Sahel through southern Africa.
Regions likely to have significant water deficits for the 12-month period from October 2016 through September 2017 include: Arkansas, Louisiana, Mississippi, Alabama, Georgia, eastern Brazil, Scandinavia, Arctic Russia, northern Africa, the Arabian Peninsula, and southern India. Water surpluses are forecast for: southern Idaho, northeastern Nevada, and northwestern Utah, southern Mediterranean Spain, western European Russia, eastern Romania, Poland, Ukraine, Belarus, Lithuania, Vietnam, and Jiangsu, China. This watch list is based on ISciences Water Security Indicator Model (WSIM) Global Water Monitor and Forecast issued 9 January 2017.