A winter storm is set to hit from Sunday into Monday, bringing significant snowfall of up to 30 centimetres in some areas. While this is great news for the ski hills, Environment Canada warns that this new snow, combined with the accumulation from earlier in the week, will cause significant weight on roofs.

New York City could soon face the “snowiest” storm of the season after enduring flurries of powder over the past week — while a polar vortex could blow in subzero temperatures with wind chills as steep as -60 degrees across parts of the United States.