Exceptional deficits throughout Africa will persist in northwestern, northern, and central countries. Surpluses will remain along the Sahel.
Exceptional deficits will remain throughout the Amazon and the Boliviarian Nations. Similar deficits will occur in northeastern coastal regions of Brazil, in Argentina, and in Chile.
The forecast for November 2024 expects significant water deficits for the 12-month period of August 2024 through July 2025 in northern South America, Canada, northwestern and eastern China, and northern to central Africa. Areas expected to experience surplus include central Africa, South Asia, and Central America.
With the release of WSIM v3 and 8 years of additional data, we reevaluate drought risk in the Amazon and the historic drought that continue to affect the region.
The forecast indicates that extreme to exceptional surpluses in northern Australia will diminish, though will still remain present in some regions of Northern Territory. Exceptional deficits across the continent will similarly dissipate, though severe deficits are expected along the southern coast of Victoria.
The forecast through November indicates that, while water deficits will continue to dominate much of the northern bulk of the continent, the extent of exceptional deficit will diminish. Moderate to severe deficits are forecast for the western Amazon Basin of Brazil and extreme to exceptional deficits in the eastern portion. Other areas of intense deficit include Pará, Maranhão, French Guiana, and northern Chile. Surpluses are forecast for central Paraguay, northern Argentina, Uruguay.
Regions forecast to have significant water deficits for the 12-month period from May 2019 through April 2020 include: Canada, French Guiana, Chile, Finland, Estonia, Latvia, Egypt, Libya, Uzbekistan, and New Caledonia. Areas with a forecast of significant water surplus include: the United States, Syria, southern Turkmenistan, Afghanistan, Bangladesh, and southeastern China. This Watch List is based on ISciences Water Security Indicator Model v2 (WSIMv2) run on 5 August 2019
The forecast through September indicates that the extent of intense water deficits will diminish across the northern nations but will persist in French Guiana and Suriname. In Brazil, intense deficits will persist in Amapá, the southern Amazon Basin, Mato Grosso, Matto Grosso do Sul, western São Paulo State, eastern Minas Gerais, and Espírito Santo. Areas of surplus include central Paraguay and northern Argentina.
Regions forecast to have significant water deficits for the 12-month period from April 2019 through March 2020 include: Suriname, French Guiana, Finland, Estonia, Latvia, Egypt, Cameroon, and New Caledonia. Areas with a forecast of significant water surplus include: the central United States, Paraguay, Syria, northern Iraq, southern Turkmenistan, Afghanistan, Tanzania, and southeastern China. This Watch List is based on ISciences Water Security Indicator Model v2 (WSIMv2) run on 9 July 2019
The forecast through August 2019 indicates that water deficits in Colombia, Venezuela, Guyana, and northwestern Brazil will downgrade considerably. However, severe to exceptional deficits are forecast for Suriname, French Guiana, and many regions of Brazil including Amapá, the southern Amazon Basin, and São Paulo State. Intense deficits will emerge tracing the Andes Mountains through Peru and into Chile. Surpluses will persist in central and eastern Paraguay and in northern Argentina.
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