Extreme cold warnings, snowfall warnings issued in southern, central Alberta

Polar air continues to flow across much of the country, prompting extreme cold warnings – including in the Yukon and Northwest Territories, northern Alberta, Saskatchewan and Manitoba, as well as central Alberta, Saskatchewan and southwestern Manitoba.   Extreme cold warnings are issued when either temperatures and/or wind chill values reach values of at least -40 for at least two hours.As incoming Pacific system will bring rain to the southern British Columbia coastline Friday a