2015 Canada Spring Outlook: Cold Start Forecast for Ontario, Quebec
AccuWeather reports a late start to spring can be expected across a large portion of Ontario and Quebec, including Toronto and Montreal, as a chilly, northwesterly flow of air is forecast to dominate. In addition, ice coverage is averaging 15-20 percent above normal on the Great Lakes. The combination of this higher-than-normal ice extent and the spring weather pattern will keep the lakes colder than normal through the spring, which will have an added cooling effect on areas directly downwind of the lakes
More persistent westerly steering winds off the warmer-than-normal eastern Pacific Ocean will deliver more storms than usual to west-central British Columbia during the season.
These persistent winds will also deflect much of the lingering winter cold away from western Canada during early spring.
The stormy pattern across Atlantic Canada this winter will likely continue into at least the first half of spring with the potential for late-season snowstorms in cities such as Saint John, New Brunswick, and Charlottetown, Prince Edward Island, and heavy rain farther south and east in places such as Halifax, Nova Scotia, and St. John’s, Newfoundland, and Labrador.
The combination of a stormy pattern and deep snowpack across New Brunswick and northern Nova Scotia will increase the flood threat across the region during the first half of spring.
On the flip side, snowfall has been well below normal across southern Manitoba so far this winter and the lack of snowpack will reduce the risk of major spring river flooding in and around Winnipeg, Manitoba.
Farther west in Saskatchewan, the risk of spring flooding will be higher due to a more extensive snow pack and the expectation of above-normal spring rainfall in southern parts of the Province from Regina to the U.S. border.