The forecast through October indicates intense water deficits in Brazil along the Purus River, in the southern Amazon Basin, along the Xingu and Tocantins Rivers, and in eastern Pará, Rio Grande do Norte, Mato Grosso, eastern Mato Grosso do Sul, western São Paulo State, and southeastern Minas Gerais. Intense deficits are also forecast for French Guiana, southern Suriname, and northern Chile. Areas of surplus include central Paraguay and northern Argentina.
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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.
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.
The forecast through July indicates that the extent of exceptional water deficits on the continent will shrink somewhat but deficits will dominate much of the northern bulk. Exceptional deficits are forecast for French Guiana, Suriname, and southern Venezuela, central Brazil, the southern Amazon Basin, many Brazilian rivers, and along the Pacific Coast from Lima through the Atacama Desert. Surpluses are expected to increase in Paraguay and will be exceptional in central Paraguay.
The forecast through June indicates that water deficits in Brazil will shrink, with nearly normal conditions in Pará and Amazonas, but intense deficits are forecast for Mato Grosso, Tocantins, Goiás, Mato Grosso do Sul, Minas Gerais, western São Paulo, and along many rivers. Surpluses will increase in northeastern states. Exceptional deficits will trace a path along the Pacific Coast from Lima, Peru reaching almost to Santiago, Chile. Surpluses will increase and intensify in Paraguay.
The forecast through May indicates that water deficits in Brazil will shrink and downgrade significantly, though intense deficits are forecast for eastern Minas Gerais, Espíritu Santo, and São Paulo. Surpluses will emerge in northeastern states and will moderate but increase in the south. Exceptional deficits are forecast for Suriname and French Guiana, and deficits of varying intensity for Brazil’s northern neighbors, and Peru, Chile, eastern Bolivia, and Argentina. Surpluses will shrink in northern Bolivia, downgrade in central Paraguay, and moderate in northeastern Argentina and Uruguay.
The forecast through April indicates that water deficits in the Amazon Basin will shrink. Deficits are forecast for many other parts of Brazil, including intense deficits in Maranhão, eastern Goiás, Minas Gerais, São Paulo, and along many rivers. Deficits are also forecast for Brazil’s northern neighbors, and Peru and Chile. Surpluses are forecast for central Paraguay, northeastern Argentina, Uruguay, and Rio Grande do Sul, Brazil.
The forecast through March indicates that water deficits in the Amazon Basin will shrink, but exceptional deficits will persist in southern Amazonas and the center of the country, and intense deficits will emerge Central-West and Southeast states and along the São Francisco River. Other areas of deficit include Peru and Chile. Surpluses will emerge in northeastern Argentina, Uruguay, and Rio Grande do Sul, Brazil, with exceptional surpluses in eastern Uruguay.
Exceptional water deficits will diminish considerably over the next several months but through February intense deficits are forecast in: southern Amazonas, Brazil; southeastern Venezuela; northern Chile; and southwestern Bolivia. Deficits of varying intensity are forecast in the northwest quadrant of the continent. Areas of surplus include: Amapá, Brazil, and southern Mato Grosso through western Minas Gerais; northern Bolivia; Paraguay; and the Paraná River in Argentina to Buenos Aires.
Through January, water deficits of varying intensity are forecast across northwestern South America and will be extreme to exceptional in Amazonas and Rondônia, Brazil; southern Venezuela; southwestern Colombia; and a pocket surrounding Quito, Ecuador. Other areas of deficit include: from southern Peru past Santiago, Chile; from Cochabamba, Bolivia past the southern border; and central Mato Grosso, Brazil. Areas of surplus include: eastern Paraguay and across the borders into Argentina and Mato Grosso do Sul, Brazil; Rio Grande do Sul, Brazil; and northern Bolivia.