From the end of last week to the beginning of this week, temperatures in the Prairies have taken a huge nosedive.
Temperatures dropped about 30°C in some areas, including Calgary. It was in the teens on Thursday. But the city was below -20°C on Sunday, like much of the Prairies.
With the wind chill, it's been feeling down to the -30's in parts of the Prairies. This type of cold will last until the middle of the week.
Cold Arctic air has descended on the Prairies. Arctic high pressure is moving toward far northern Ontario, where wind chills were expected to be -45 to -50 on Sunday night. Exposed skin can freeze in minutes when it's this cold.
Other parts of Canada are also feeling the chill. Toronto issued an extreme cold weather alert in anticipation of a tumble to -20 with the wind chill in southern Ontario on Monday. Atlantic Canada will also be seeing wind chill values in the -20's on Monday.
Over the weekend, as the cold swept into the Prairies, the big story was the snow. Southern Alberta saw up to 20 cm of snow in places like Calgary.
The next snowstorm to watch in Canada could hit Ontario on Groundhog Day and then move to the east.