All of Saskatchewan is now under an extreme cold warning

Environment Canada’s extreme cold warning is now in effect for the entire province of Saskatchewan — and it’s the only province with that distinction.
 
Environment Canada’s weather warning map, Dec. 28, 2017. All of Saskatchewan is now included in the alert.
Southern Saskatchewan is expected to experience wind chills into the -30 C range to persist throughout the morning, and in many locations, the wind chills should reach -40 C.
Environment Canada expects the wind