Snowfall warning in Calgary; up to 20 cm expected by Wednesday

The alert is also in effect for a number of areas surrounding Calgary, including Airdrie, Cochrane, Olds and Sundre regions as well as the Crowsnest Pass, High River, Kananaskis, Drumheller and Cardston regions.

Heavy snowfall was expected for those regions as well starting Tuesday and continuing into Wednesday, with the possibility of reaching total amounts exceeding 30 cm in mountainous areas, Environment Canada said.