By Tom Spears, Ottawa Citizen, January 2, 2018
Like the holiday guest who won’t go home, cold air has gripped this region since Boxing Day.
Now we have found out why.
“If you look at it since (December) 26, you have had no weather,” says David Phillips, the senior climatologist at Environment Canada. It turns out he means no stormy weather.
“That’s a key in the staying power of this cold air. Because what kicks it out is a storm, a major weather could come through — an Alberta Clipper or a Saskatchewan Slasher or a Texas Panhandle storm that kicks the cold air out,” he said.http://ottawacitizen.com/news/local-news/whats-behind-the-staying-power-of-the-cold-air-in-ottawa