Africa
ISciences staff
Africa: Surplus expands throughout Sahel, E ...

The forecast anticipates exceptional deficits to continue in northern and northwestern African countries, as well as some central and southern countries. Intense surpluses are expected to emerge in areas throughout the Sahel.

Africa: Surplus expands throughout Sahel, E Africa
Australia & New Zealand
ISciences staff
Australia & New Zealand: Surplus persists ...

The forecast indicates that intense surplus will occur in most northern and central regions of Australia, with exceptional deficits diminishing in portions of the country near its western coast. Exceptional deficits are expected to emerge in Tasmania, as well as in pockets across New Zealand. 

Australia & New Zealand: Surplus persists in N, SE Australia
East Asia
ISciences staff
East Asia: Deficits continue in N, S, and NW ...

The forecast indicates that exceptional deficits will mostly dissipate in northeastern China, but continue in northern, southern, and northwestern portions of the country. Exceptional surplus is expected to diminish in southwestern China, though moderate to severe surpluses may continue in eastern regions of the country. 

East Asia: Deficits continue in N, S, and NW China
Southeast Asia & Pacific
ISciences staff
Southeast Asia and the Pacific: Widespread ...

The forecast indicates that exceptional deficits in Mainland Southeast Asia will persist but lessen in size, while intense surpluses will expand throughout Maritime Southeast Asia. 

Southeast Asia and the Pacific: Widespread surplus throughout Maritime Southeast Asia
South Asia
ISciences staff
South Asia: Widespread surplus to emerge ...

The forecast anticipates a widespread emergence of surplus in India, with the most intense concentrations appearing in central, southern, and eastern regions of the country. Exceptional deficits are expected in regions of Afghanistan and Pakistan. 

South Asia: Widespread surplus to emerge throughout India

South America

South America: Intense water deficits to persist in Amapá & Roraima

South America: Intense water deficits to persist in Amapá & Roraima

A significant retreat of water deficits is forecast October through June, but through December exceptional deficits are expected in northernmost Brazil and into neighboring countries. Deficits are also forecast north of Lake Titicaca in Peru through La Paz and Cochabamba, Bolivia and into Argentina. Widespread, primarily moderate deficits are predicted in much of eastern Brazil, which may be more severe along the coast of the State of São Paulo. Surpluses are forecast in central Colombia, northern Peru, northern Bolivia, eastern Argentina, Uruguay, and O’Higgins Lake in Patagonia. After December widespread moderate surpluses are forecast in the northern Amazon Basin

South America: Widespread water deficits in Brazil to persist but moderate

South America: Widespread water deficits in Brazil to persist but moderate

The near-term forecast indicates that widespread water deficits will persist, though moderate, in Brazil. However, intense deficits are forecast for: Brazil’s far north into Suriname and French Guiana; Ceará and Rio Grande do Norte; north-central and southern Venezuela; Cochabamba, Bolivia; northern Chile; and Tierra del Fuego. Surpluses will persist in La Pampa and Buenos Aires Provinces, Argentina, and will emerge in Uruguay. After November deficits will retreat to eastern Brazil and surpluses will emerge in the northern Amazon Basin.

South America: Widespread, intense water deficits in much of Brazil

South America: Widespread, intense water deficits in much of Brazil

Though a slight reduction in the extent of exceptional deficits is expected, the forecast for the next three months indicates a basic pattern of water conditions similar to observed conditions in the prior three months which includes widespread, intense deficits in most of Brazil north of Rio de Janeiro and surpluses in La Pampa Province, Argentina. In addition, a transition from surplus to deficit is forecast in Brazilian states south of Rio and in eastern Paraguay. After October deficits across northern South America are forecast to shrink considerably.

South America: Exceptional water deficits in Brazil forecast to retreat to the north after September

South America: Exceptional water deficits in Brazil forecast to retreat to the north after September

Recently observed conditions across the whole of South America are expected to persist through September with a slight decrease in the extent of exceptional water deficits in much of Brazil north of Rio de Janeiro. Surpluses in eastern Paraguay and southern Brazil should transition to near-normal conditions during this period, but exceptional surpluses are expected to persist in La Pampa and Buenos Aires Provinces in Argentina. After September conditions are forecast to improve across the continent though exceptional water deficits will persist in Amapá and northern Pará, Brazil and in nearby northern regions.

South America: Widespread exceptional water deficits for much of Brazil

South America: Widespread exceptional water deficits for much of Brazil

Recently observed water conditions across the whole of South America are expected to persist through the near-term forecast period with widespread exceptional water deficits spanning the whole of northern Brazil and the Amazon basin. Exceptional surpluses in central Argentina and southern Paraguay persist in the near-term before moderating in the later forecast periods. In the September through November period, severe to exceptional deficits are expected to persist in northern Chile and across the northern states of Brazil including Roraima, Pará, and Amapá.

Many analyses reported in ISciences-authored blog posts are based on data generated by the ISciences Water Security Indicator Model (WSIM). Other sources, if used, are referenced in footnotes accompanying individual posts. WSIM is a validated capability that produces monthly reports on current and forecast global freshwater surpluses and deficits with lead times of 1-9 months at 0.25°x0.25° resolution. This capability has been in continuous operation since April 2011 and has proven to provide reliable forecasts of emerging water security concerns in that time-frame. WSIM has the ability to assess the impacts of water anomalies on people, agriculture, and electricity generation. Detailed data, customized visualizations, and reports are available for purchase.

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