Once the windchill gets beyond -40C/F it doesn't really matter anymore. Any exposed skin is just as frozen. Your eyelashes are still sticking together. It woul

Once the windchill gets beyond -40C/F it doesn't really matter anymore. Any exposed skin is just as frozen. Your eyelashes are still sticking together. It would probably be better to just report it as some sort of "scarf required" zone followed by "scarf required and it might be a bit uncomfortable" zone.