The term polar vortex has been thrust into the public consciousness over the last few years with media descriptions of very cold polar vortexes descending out of Canada into the Northern United Sta…
I think La Niña plays a bigger role for the whole season than this. Where I am (Vancouver, Canada), I expect below average temperatures and above average precipitation. The presence of a weak polar vortex signals a higher risk of at least one strong winter cold snap in North America, but we won’t know specifics until much further along in the season.
I think La Niña plays a bigger role for the whole season than this. Where I am (Vancouver, Canada), I expect below average temperatures and above average precipitation. The presence of a weak polar vortex signals a higher risk of at least one strong winter cold snap in North America, but we won’t know specifics until much further along in the season.