Alright, now that's what I'm looking for. If I'm skiing directly into that wind I'm sure I'm not going anywhere near 40mph, am I? Hard to say. And the wind isn't blowing 40mph at ground level, either, is it? So, I'm probably not dealing with wind chills any worse than what is posted, unless I'm getting up good speed and heading straight into the wind. Correct?
When I'm skiing straight into the wind it feels as though I'm barely moving. I'd say 20-25 tops. If the winds blowing 20-25 at ground level then I'm only talking 40-50mph airspeed. With a 5 degree airtemp then it's like -20-25 windchill.
Am I in the right neighborhood?