Severe to exceptional surplus will affect several regions of southern Mexico and Central America. Severe to exceptional deficits will continue in northwestern and central areas of Mexico.
Widespread severe to exceptional surpluses in western and central Europe will mostly resolve, becoming near-normal conditions. Eastern European countries are expected to observe widespread deficits of varying intensity.
Moderate to severe surpluses will remain in northern areas of Australia.
Exceptional deficits will continue in Amazonas and the Bolivarian Nations, but will diminish in size.
The forecast through November indicates that water deficits will shrink and downgrade considerably, particularly in the south, where merely mild deficits are expected. Moderate to exceptional deficits are forecast across the north and along the southwest bank of the Red Sea. Surpluses will persist in pockets of the western Sahel, emerge in pockets around the Gulf of Guinea, and increase in East Africa around Tanzania.
The forecast through July indicates that water deficits will downgrade in the southern half of the continent and across its midsection from the Gulf of Guinea to the Horn of Africa but will intensify across northern Africa with exceptional deficits expected. Moderate to severe deficits are forecast in the south, with intense deficits in Namibia. Areas of surpluses include Tanzania, northern Madagascar, the mouth of the Congo River, and the northern coast of the Gulf of Guinea.
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 May indicates that water deficits will downgrade, with moderate anomalies throughout most of the continent, some pockets of greater intensity, and surpluses in Tanzania. Exceptional deficits are forecast in the Ethiopian Highlands. Other areas of significant deficit include Equatorial Guinea, Lesotho, Guinea-Bissau, central Republic of the Congo, eastern Angola, western Zambia and central Zambia and along the Zambezi River, and northern Zimbabwe.
Regions forecast to have significant water deficits for the 12-month period from December 2018 through November 2019 include: French Guiana, Finland, Latvia, Angola, Namibia, United Arab Emirates, Cambodia, and Australia. Areas with a forecast of significant water surplus include: Kansas, Texas, and Tennessee (US), Syria, Tanzania, and China. This Watch List is based on ISciences Water Security Indicator Model (WSIM) run on 7 March 2019.
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