The near-term forecast through December indicates intense water deficits along the northern Ontario-Quebec border into southern Nord-du-Québec, and in Sherbrooke (Quebec), New Brunswick, southern Nova Scotia, southeastern Newfoundland, northeastern Manitoba into Quebec, and from Glacier National Park in British Columbia into Alberta. Deficits will retreat in the Prairie Provinces. Exceptional surpluses are forecast west of Lake Winnipeg in Manitoba into Saskatchewan; from Churchill Lake in SK past Ft. McMurray, Alberta; and, near Kelowna, BC.
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The near-term forecast through November indicates a significant retreat of exceptional water deficits in the Prairie Provinces. Deficits will persist in northeastern Manitoba and are forecast for much of Alberta, where they may be more intense north of Banff National Park in the southwest and may persist through February 2018 or longer. Surpluses in Southern Ontario north of Kitchener and in Ottawa are expected to diminish, and deficits are forecast for much of Northern Ontario. Deficits will persist in New Brunswick, and emerge in Quebec east of the St. Lawrence River.
The near-term forecast through October indicates a significant retreat of exceptional water deficits in the Prairie Provinces. Deficits will persist in central Quebec and southern Newfoundland, and emerge east of the St. Lawrence River, in New Brunswick, and in southern Nova Scotia. Surpluses are expected to persist in central Manitoba west of Lake Winnipeg, a large block of northwestern Saskatchewan into Alberta, southeastern British Columbia, and near Ottawa and west of Toronto. After October conditions will continue to moderate, though some exceptional surpluses will persist.
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.