The forecast for May 2024 expects significant water deficits for the 12-month period of February 2024 through January 2025 in South America, Africa, and Canada. Areas expected to experience surplus include central to eastern Africa, northern Australia, Europe, and Southeast Asia.
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.
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.
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.
The forecast through June indicates that exceptional deficits will retreat from Quebec’s Ottawa-Gatineau Watershed; surpluses in Northern Ontario will transition to deficit; and deficits in the Middle Reaches of the Athabasca River Watershed in Alberta will become exceptional. Primarily moderate deficits are forecast across southern Manitoba and Saskatchewan. Intense surpluses will emerge in the Columbia River Basin in British Columbia, and deficits near Vancouver will persist but downgrade.
The outlook for Canada through December indicates that, overall, the extent of exceptional water deficits will shrink, though a span across central Quebec will persist until March. Deficits of varying severity are forecast for most of Ontario and Quebec. Surpluses are forecast in the southwestern corner of Northern Ontario from Kenora north which are expected to persist through March. Surpluses are also forecast for southern British Columbia near Kamloops and the Peace Country region of Northeast British Columbia through March.
The outlook for Canada indicates large pockets of exceptional water deficits through September in northern Manitoba, eastern Ontario, and central Quebec, along with deficits of generally lesser severity in British Columbia and the Prairie Provinces. Surpluses are forecast northwest of Quebec City, on the southern shore of Hudson Bay, and in northern Saskatchewan. From October on, deficits across the country are forecast to diminish and surpluses will emerge in southern Ontario and northern Quebec.
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