Extreme cold warning for Calgary, with lows possibly reaching -38

Calgary faces coldest conditions in 20 years; roads extremely icy; agencies work to keep unsheltered people warm; wind chill as low as -50.

Calgary weather: Weekend chinook to bring city out of deep freeze

Edmonton weather: Just how cold is it going to get?

Temperatures plummet in Calgary this week

Winter-weather wallop headed Calgary's way

Calgary weather: Classes cancelled for Rocky View Schools students

Brutal' Arctic blast expected to bring frigid temperatures to North America, US weather

All of Alberta under extreme cold warning as polar vortex sweeps in

Extreme cold warning in effect for Winnipeg

Calgary weather: Brief cool down starts Thursday

Weather reprieve coming for Calgary, southern Alberta