Looking at the latest guidance, it looks like a significant pattern change is in store in about a week across Canada. Between Aug. 21 and 25, there will be a surge of cool air coming down into the Prairies and perhaps a portion of British Columbia. At the same time, very warm and increasingly humid air will spread northward into the Midwest U.S., eastern Canada and the Northeast U.S., which is more typical of what we expect in August. Farther northeast, a persistent upper-level low will likely bring Newfoundland a stretch of cooler and showery weather during the above time period.
Going farther ahead, below is my latest interpretation of the European long-range forecast model weeklies going out through the second week of September.
Note**** I will be releasing the AccuWeather Canada Fall Forecast on Monday.
A small Alberta Clipper storm will track southeastward tonight into Tuesday from the Upper Midwest to the Middle Atlantic region.
Yes, another snowstorm to discuss for Atlantic Canada.
My latest interpretation of the weekly ECMWF long-range forecast model.....
Accumulating snow tonight into Wednesday from Manitoba to northwestern Ontario.
The Maritimes brace for yet another snowstorm this weekend.
Update on the long range forecast model output through April.