The forecast through November indicates some moderate water deficits around Montreal and between Toronto and Ottawa, and severe deficits southeast of Winnipeg. A vast arc of exceptional deficit will persist in northern Quebec from Lake Mistassini to the province’s eastern border. Intense deficits will also persist in central and northeastern Manitoba and central and northwestern Alberta. Surpluses are forecast from north-central Alberta into northwestern Manitoba.
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The forecast through October indicates that conditions of water surplus in southern Quebec and deficit in southern Alberta and Saskatchewan will normalize. Forecasts for metropolitan areas include surpluses near Toronto; deficits around Winnipeg; normal conditions near Quebec City, Montreal, Ottawa, Regina, Saskatoon, and Calgary; and near-normal conditions in Vancouver. Intense deficits will persist in large pockets of Quebec, Manitoba, and Alberta.
The forecast through September indicates that moderate water surpluses will persist from Lake Huron to Toronto but surpluses in southern Quebec, including the Gatineau River Watershed and Montreal, will nearly disappear. Moderate to extreme deficits will persist in southern Manitoba. Exceptional deficits are expected in southern Vancouver Island, British Columbia, and surpluses in the southern Columbia Mountains.
The forecast through August 2019 indicates that water surpluses will shrink in southern Quebec. Some surpluses are forecast near Toronto and Montreal, deficits from Regina to Winnipeg, and intense deficits in southern Vancouver Island. Exceptional deficits will persist along Ontario’s eastern border and in large pockets of Quebec, Manitoba, and Saskatchewan. Surpluses will increase in Newfoundland and Labrador and persist in a large block spanning the northern Alberta-Saskatchewan border.
The forecast through July indicates that conditions from the westernmost point of the Ottawa River stretching east to the Gulf of St. Lawrence will transition out of exceptional water surplus to milder anomalies, while conditions around Montreal and near Ottawa transition to moderate surplus, and surpluses from Toronto to Lake Huron increase and intensify. Deficits will cover much of the nation, with intense deficits on Vancouver Island and surpluses in southeastern British Columbia.
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 major changes forecast through May are that exceptional water deficits will shrink in Quebec though large pockets will persist, and widespread surpluses in Northern Ontario will transition to deficit. As for major population areas, intense deficits are forecast for Southern Ontario and through southern Quebec; near Vancouver, British Columbia; near Winnipeg, Manitoba; and surrounding Regina, Saskatchewan. Deficits of varying intensity are forecast in many parts of the country. In British Columbia, surpluses will increase in the southeast and transition to deficit in the southwest.
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.
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.