A Post Dispatch story about this week's excruciating cold and snow had this sentence: "The so-called “polar vortex” that enveloped much of the Midwest began its retreat, seesawing St. Louis’ chill from life-threatening status to barely bearable."
It's the small things that occasionally bug me. Why did reporter Joel Currier include the words, "so-called" when mentioning the Polar Vortex? Isn't that what it was, wasn't the vortex on every weather map for 5 days? It may be a rare occurance, but certainly not unknown in weather circles. So why "so-called"?