A near-permanent polar vortex was a salient feature of the Little Ice Age.
And something that happened only a few winters ago can't be "statistically impossible" if it happened again this winter. (The polar vortex of 1989 lasted almost a month; this year's was only a week-long.)
A near-permanent polar vortex was a salient feature of the Little Ice Age.
And something that happened only a few winters ago can't be "statistically impossible" if it happened again this winter. (The polar vortex of 1989 lasted almost a month; this year's was only a week-long.)