Extreme cold warnings blanket much of Alberta

A frigid arctic airmass has blown into Alberta, bringing with it a stretch of freezing weather that is expected to linger for at least a week. Environment Canada issued extreme cold warnings for much of Alberta Sunday morning. According to the agency, the airmass is moving southward across the province and the warnings are expected to expand. Extreme cold warnings are issued when very cold temperatures or wind chill elevates the risk of health-related complications from cold, such as frostbite o