Was not aware of that! Here in Florida, we don't get extreme cold, per se, and when we're told that wind chills are in the teens/twenties, it usually means that cold air is blowing across the Gulf and ripping through any clothing on our bodies.
Dead still cold nights usually don't categorize under "wind chill" for our local meteorologists.
Wind chill applies at any temp below 60 or so degrees, not just super low temps.
Was not aware of that!