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Anyone know how frostbite thresholds are calculated?
#14
"Only issue is my color values don't match.  Anyone know why -62 windchills are light blue at the top of the chart, but then are purple at the bottom?  If the implied temperature is -52 in both cases, shouldn't frostbite occur at the same time?  Isn't that basically what windchill is for -- to give an equal representation of what the temperature would feel like it the wind wasn't blowing?"

The wind makes it worse.  The charts are really just a rough estimate. 
I can split wood in a t-shirt , hat, and gloves down to about 6F if there is no breeze to speak of. The wind will penetrate your clothing, the cold itself takes a while to do that if you are fit and active and your clothing is halfway decent.

I've gone winter camping where we snowshoed in and slept in an open-faced shelter when we were getting wind chills in the -30 to -40 range. Next morning when it was 11F  and not breezy much at all outside we were almost sweating while snowshoeing out.

This weekend is the first time in years I've had 5 layers on my torso to not freeze when outside (still only needed 2 pairs of socks because there was no way on earth my feet were getting wet when it was that cold).
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RE: Anyone know how frostbite thresholds are calculated? - by James D Jarvis - 02-06-2023, 05:25 PM



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