The forecaster says the arctic air mass has settled over Yukon and the Northwest Territories with temperatures near -40 C and wind chill drop to to -55 before temperatures turn more seasonal by Saturday.
Warmth related to the El Niño climate phenomenon this week has pushed temperatures to record highs in regions including Metro Vancouver, Greater Victoria, the Sunshine Coast and the Okanagan.
In the concrete bowels of Canada Place in downtown Vancouver, below a luxury hotel and near the berths of ocean liners, are the charred signs of a Christmas Day tragedy.
At a news conference Thursday, Nicole Poirier, vice-president of operations at NB Power, said the outages were largely caused by trees that downed power lines.
Canadian auto companies sold more electric vehicles this year than ever before, but would still need to nearly double that number within three years to meet a new national mandate.
Officials in British Columbia's Shuswap and Okanagan regions are shifting some of their attention from wildfire response to the challenges of recovery as flames abate and many evacuees begin returning home, although crews continue to fight out-of-control blazes.
My analysis of data from the National Oceanic and Atmospheric Administration reveals a staggering revelation — more than 150 monthly temperature records have been broken across Canada this year.