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.
Viewing entries tagged
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.
Exceptional water deficits will shrink and downgrade across North Africa and along the Red Sea but deficits will remain widespread and intense. Intense deficits are also forecast for western Ethiopia, southern Gabon, northwestern Botswana, central Zambia, and western Madagascar. Exceptional surpluses will persist in East Africa; extreme surpluses are forecast for the conjoined borders of Cameroon, Central African Republic, and Republic of the Congo; and surpluses of lesser intensity are forecast for westernmost Democratic Republic of the Congo.
The April 2018 Outlook indicates wetter than normal conditions in India, East Africa, and northwest Brazil. Significantly warmer than normal temperatures are forecast for Far East Russia and Alaska, much of eastern China, particularly the Yangtze River Basin from Shanghai to Chongqing, and eastern Australia from Brisbane to Canberra.
The extent of exceptional water deficits is expected to diminish considerably through October – particularly in the southern half of the continent – but deficits reaching exceptional intensity are forecast from northern Mauritania through northern Sudan, and in Somaliland, Somalia, and eastern Ethiopia. A large block of exceptional surplus is forecast in eastern Tanzania, and some exceptional surplus is also expected in northern Madagascar. Overall, deficits will continue to downgrade through January 2018, while surpluses will increase in Tanzania and will emerge in Malawi, northern Mozambique, eastern Zambia, Uganda, western Kenya, and along the While Nile in South Sudan.
The August forecast indicates a few areas that will see drier than normal conditions, including northern India from Gujarat through the center of the country; and, along the southern and eastern shores of the Black Sea. But once again it is the temperature forecast that commands attention with vast areas of northern South America and the Middle East forecast to be exceptionally hotter than normal, as well as many other parts of the world with a forecast of warm anomalies of varying severity.
The extent of exceptional water deficits is expected to diminish considerably after September, though deficits of varying severity will remain in the forecast and will likely be more severe in the northern half of the continent. In the near-term, July through September, severe to exceptional deficits are forecast in the desert regions of the northern nations, Algeria, Libya, Egypt, northern Niger, and northern Sudan; and also in Equatorial Guinea and Gabon. Exceptional deficits will retreat in southern Namibia during this period but will emerge in the northeastern portion of the country, eastward into neighboring Botswana and across the border into South Africa. Exceptional surpluses are forecast to continue in eastern Tanzania though September but will retreat to the coast by December.
Regions likely to have significant water deficits for the 12-month period from January 2017 through December 2017 include: Arkansas and Florida (US), Quebec (Canada), Brazil, Finland, Estonia, Denmark, Libya, Egypt, Saudi Arabia, Yemen, Tamil Nadu (India), Borneo, and New Guinea. Water surpluses are forecast for: Idaho and the Pacific Northwest (US), southwestern Zambia, the Okavango Delta (Botswana), northeastern Pakistan, between the Irtysh and Tom Rivers (Russia), central Vietnam, and eastern Queensland (Australia). This Watch List is based on ISciences Water Security Indicator Model (WSIM) Global Water Monitor and Forecast issued 7 April 2017.
Though the extent of exceptional water deficits across the continent will diminish from March through May, severe to exceptional deficits will continue to emerge across northern Africa, especially in Niger. Exceptional deficits are also forecast in southern Somalia and southern Gabon. Deficits are also expected in Congo, Rwanda, Burundi, southeastern Central African Republic, Democratic Republic of the Congo, northern Angola, Uganda, western Tanzania, Kenya, and northeastern Mozambique. Surpluses are expected in southeast Sudan, the Okavango Delta in northern Botswana into western Zambia, Zimbabwe, and northern South Africa. From June through August the overall picture will remain much the same, but worth noting is that extreme to exceptional deficits are forecast for nearly all of Egypt during this period, and deficits will emerge in Somaliland, northern Cameroon, and southern Angola.