Polar vortex will bring up to 20 centimetres of snow to Calgary, keep highs below freezing

A dominant ridge of high pressure brought unusually warm weather to southern Alberta over the weekend, setting temperature records in several communities. According to Environment and Climate Change Canada, 25 communities set new record highs including areas like Waterton (17.9 C), Pincher Creek (20.1 C), Claresholm (21.5 C), Banff (16.0 C), Bow Valley (Provincial Park) (18.1 C), Sundre (18.6 C), Jasper (20.2 C), Grande Prairie (21.3 C) and Fort McMurray (14.7 C). Calgary did not make history Su