Calgary weather: Cold, snow, fog and freezing rain ahead of a warmup on the weekend [Video]

An infusion of cold Arctic air is continuing to be a main weather driver across Alberta, B.C. and Saskatchewan.

A low-riding jet stream sitting south of the Canadian border collided with a moisture-laden Pacific air mass and produced snow as far south as the U.S. Midwest early Tuesday. It prompted a number of weather advisories from Environment and Climate Change Canada.

Rainfall warnings (green), snowfall warnings (white), special weather statements (pink), winter storm warnings (dark blue), wind warnings (purple), and extreme cold warnings (light blue), issued from Environment and Climate Change Canada on Dec. 17, 2024.

The national weather agency warns as much as 50 to 70 millimetres of rain is possible along the West Coast starting Tuesday night.

As this frontal system tracks east and encounter cooler air, heavy wet snow is expected across the B.C. interior and extending northeast to the Alberta side of the northern edge of …