Back when I was a child, in Ohio in the early 1960s, I can remember times when temperatures dropped into the teens, or even significantly below zero.  There would sometimes be thick frost on the windows.  (Does that still happen in Ohio now?  I wonder how cold it must get for that to happen.)  No one used the language “polar vortex” or “arctic vortex” back then.  Maybe — 50 years ago — such language did not yet exist.

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