The web cam image from earlier today from Sunshine Village Ski Resort in Banff N.P. in Alberta says it all.....
There was also snow in the higher elevations of Montana and Idaho from this same storm system.
1. Warm, humid air surging north ahead of a could front will likely trigger some strong to severe thunderstorms this evening and into the overnight hours across southern Manitoba. The greatest threats will be large hail and damaging, front line winds.
Strong thunderstorms should re-fire across northwestern Ontario during the day Thursday.
2. This same line of showers and thunderstorms will impact southern Ontario later Friday night and into early Saturday then Quebec midday Saturday, but the severe threat will be low due to the timing of the day and the fact that the line will be moving into a more stable environment.
3. The northern part of the jet stream energy associated with the above front looks to be a little more progressive, and this may be just enough to steer any tropical low pressure that forms east of Bermuda over the weekend far enough to the east of Newfoundland early next week. However, still a lot of uncertainty and things could change between now and the weekend.
4. The pattern looks unseasonably warm across the Prairies early next week.
5. British Columbia and the U.S. Pacific Northwest will turn stormy this weekend and into early next week as at least three systems moves inland across the region, bringing widespread rainfall. The rainiest period should be from Saturday to Tuesday, though there may be a break in the action centered around early Sunday.
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Significant snow is likely for parts of New Brunswick this weekend.
Cold air expected to spill into eastern North America in about 10 to 14 days.
Arctic air likely to retreat well to the north as we go into early December.
Active weather pattern through next week.
My weekly update on the short- and long-range patterns.