Nice visible satellite shot of southern Ontario from this afternoon. You can clearly see the solid white area north of Kitchener and extending up toward the Bruce Peninsula which is snow cover. The broken white areas to the south and southeast are lower-level clouds caused by instability from an upper-level disturbance that was moving through.
The storm now over the Southeast U.S. will partially phase with energy cutting across eastern Canada, which will draw the storm up into Atlantic Canada late Friday into early Saturday. At this point, not a major storm for the Maritimes. Mostly rain for Nova Scotia, but likely changing to snow before it ends from west to east.
Farther north and west, it will be colder, but the precipitation will be lighter. It looks like some rain initially for Charlottetown, PEI, then a change to snow with a small accumulation possible Friday night.
The storm will bring heavier precipitation to Newfoundland with snow favored over the north and northwest and rain favored over the south and southeast Friday night into Saturday morning.
A system will spread a narrow band of snow into the Prairies Thursday night into Friday. Not a major storm, but places such as Edmonton, Saskatoon, and perhaps Regina could end up with a general 5-8 cm.
----- Pattern change
The core of the cold will be concentrated over the Prairies from this weekend into the middle of next week, while milder, Pacific air will spread east into the eastern U.S. and perhaps southeastern Canada for a brief period as a front will meander across the region.
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Bitterly cold air will get reinforced across the western half of the country into early next week. A Midwest storm will bring accumulating snow to eastern Canada later this weekend.
Winter will strengthen its grip on Canada over the next 10 days with plenty of cold and opportunities for snow.
Quick hitting snow tonight for the Maritimes. Signs increasing for a major pattern change in December.
Arctic air continues to hang out on the other side of the pole.