By Peter Rabobowchuk, CTV News Ottawa, December 27, 2017
Environment Canada says it's not about how cold it is, but how long this wave of frigid air will stay around that's unusual.
Meteorologist Alexandre Parent said Wednesday the big chill is affecting the Prairies, Ontario and western Quebec and was to spread into the Maritimes.
But Nova Scotia was already dealing with a winter weather system that snapped hydro poles and knocked out electricity for thousands.
https://www.ctvnews.ca/canada/environment-canada-says-long-lasting-cold-wave-unusual-for-this-time-of-year-1.3736804