Extreme cold mostly over in Canada except in northern Alberta
Northern Alberta is the only part of the country still under an extreme cold warning, about a week after Western Canada was gripped by bitter cold and biting winds.
Environment Canada says wind chill values nearing -40 were expected overnight, though conditions are set to improve in the afternoon.
In B.C., Vancouver has extended an extreme weather alert in the city until Sunday because of snow accumulation and freezing rain conditions, with extra shelter spaces available.
Schools in Metro Vancouver, with the exception of Langley, reopened on Friday after two days off prompted by a storm on Wednesday dumped up to 38 centimetres of snow in southwestern B.C.