Originally Posted by
bryancobb
That wouldn't make any sense for foggy conditions. It must be a typo. If it was 21 DegF outside, all moisture would have fallen as
frost already and the humidity would be ZERO. If the temperature dropped from 21 DegF to 14 DegF, I'm pretty sure the air would
not become saturated.
Don't let anyone ever tell you you can't have fog (ice fog) at -40C I have iced up badly at -40C, ice fog rising off the open sea in the Canadian arctic