The forecast through April indicates exceptional water deficits across Quebec from Hudson Bay into central Labrador, and exceptional deficits in the Ottawa-Gatineau region, northern New Brunswick, and around Fortune Bay on the Island of Newfoundland. Moderate to extreme deficits will persist along Ontario’s eastern border; surpluses are forecast around Toronto. Intense deficits are expected in southern Saskatchewan and the Middle and Upper Reaches of the Athabasca River in Alberta. Surpluses are forecast in southern British Columbia and severe deficits in southern Vancouver Island.
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The forecast through March indicates a pattern of water anomalies similar to the prior three months. Notable changes are as follows: deficits are expected to increase and intensify in southern Saskatchewan and to a lesser extent in southern Alberta; and, moderate surpluses will emerge in southwestern British Columbia and along the length of BC’s coast. Persisting conditions include intense deficits in the Ottawa-Gatineau Region of Quebec and across the border into Southern Ontario.
The forecast through February indicates a pattern of anomalies similar to the prior three months, including: exceptional water deficits in Quebec, notably in the Ottawa-Gatineau River region in the south and across the border into Ontario; intense deficits in the Middle and Upper Reaches of the Athabasca River watershed in Alberta; and intense surpluses in southeastern British Columbia. Deficits are expected to increase in southern Saskatchewan where anomalies will be severe to exceptional.
The forecast through January indicates widespread, intense water deficits across central Quebec, and moderate surpluses in the south. In Ontario, moderate deficits are expected in the south, though conditions may be more intense around Ottawa, and widespread surpluses for much of the north. Elsewhere, a complex patchwork of anomalies is forecast including deficits of varying severity across the southern Prairie Provinces and intense surpluses in southern British Columbia.
Through December, exceptional water deficits in the east will shrink somewhat, and moderate to severe surpluses will emerge in much of northern Ontario with intense deficits in the northwest. Deficits will diminish considerably in the southern portions of the Prairie Provinces, though moderate deficits will linger in southern Manitoba and will emerge along the North Saskatchewan River. Elsewhere in the west the pattern of anomalies will remain much the same as in the prior three months.
Through November persistent, vast blocks of exceptional water deficit are forecast in the east. Primarily moderate deficits are expected from southeastern Saskatchewan through southern Manitoba and into Ontario. Areas of more intense deficit include a band across central Manitoba, the upper and middle reaches of the Athabasca River watershed in Alberta, and around Prince George, British Columbia. Intense surpluses are forecast near Fort McMurray, Alberta and Kamloops, British Columbia.
The forecast through October indicates some retreat of exceptional water deficits, especially in southern Saskatchewan and Manitoba where deficits are expected to downgrade, becoming mild to moderate. Deficits will shrink in British Columbia around Prince George, though remain exceptional; will downgrade somewhat in Alberta and along Ontario’s eastern border; and will shrink in Quebec but remain widespread. Exceptional surpluses in southern BC will diminish.
Exceptional water deficits are forecast to decrease, though vast blocks will persist. These areas include: Quebec from the Caniapiscau Reservoir to the St. Lawrence River; surrounding Lake Mistassini, QC; Ontario’s eastern border; northeastern Manitoba; the Lower Athabasca River region in Alberta; surrounding Prince George, British Columbia; and, northwestern BC. Intense surpluses will persist from northwestern Saskatchewan reaching west to Fort McMurray, Alberta, and in southeastern BC.
Exceptional water deficits are expected to decrease but will persist in many areas, including along Ontario’s eastern border. Surpluses are expected northwest of Toronto, and moderate deficits from Peterborough to Ottawa. In Quebec, deficits will be extreme around Sherbrooke. Severe deficits are forecast for southern Manitoba. Deficits will be intense in the Upper Athabasca and Lower Peace River Regions of Alberta, and surrounding Prince George, BC. Surpluses will increase in southern BC and will be exceptional around Kamloops and Kelowna.
Two transitions stand out in the near-term forecast: a change from water surplus to deficit in northern Quebec, and the emergence of widespread, exceptional surpluses in southeastern British Columbia. Deficits will diminish overall but are forecast along Ontario’s eastern border; in northeastern Manitoba and north of Lake Winnipeg; in northwest Alberta and north and west of Edmonton; around Prince George, BC, and in northwest BC. Surpluses will emerge in eastern Quebec near the mouth of the St. Lawrence River, and will increase along the northern border of Alberta and Saskatchewan.