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.
Moderate water deficits, punctuated by more intense pockets, are expected across much of Victoria and New South Wales (NSW) and across northwestern and northern Australia. Areas of intense deficit include: the southwestern tip of Western Australia; from Melbourne through Canberra past Sydney; and, near Darwin and the Daly River region of Northern Territory. Generally mild deficits are expected in New Zealand. Deficits in New Caledonia will be intense.
Moderate water deficits, punctuated by more intense pockets, are expected across a large portion of the east and southeast including the Murray-Darling Basin, scattered across the north, and in the southwest tip of the country. Deficits are expected to be intense in Tasmania, pockets along the southeast coast, the southwest tip, Darwin and the Daly River region, and along the southern shore of the Gulf of Carpentaria. Intense deficits are forecast for New Caledonia.
Exceptional water deficits that have dominated southern Australia are expected to disappear, but deficits are forecast for northern Australia, the southwest, the southeast, and Tasmania. These deficits may be intense in Tasmania and in pockets of other aforementioned areas. Moderate deficits are expected along the Darling, Lachlan, and Macquarie Rivers in New South Wales. Surpluses will shrink but persist in the Mackenzie River region of Queensland and in southwest Kimberley region of Western Australia.
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