A high-pressure system in the Arctic could push frigid air south starting in mid-December, raising hopes for a white Christmas and concerns of a deep freeze

If you’re among the Canadians hoping for a white Christmas this year, there’s good news and bad news.

The good news is that some forecast models point to conditions favourable for snowfall.

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The bad news is that it’s due to the Arctic polar vortex, which could also bring extremely cold temperatures this holiday season.

Using information from the European Centre for Medium-Range Weather Forecasts (ECMWF) and Global Forecast System (GFS), weather researcher Andrej Flis from Severe Weather Europe recently highlighted an atmospheric warming event in late November that could result in frigid polar air moving south in

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