Ditto on the 15 mph mark. When I see that forecasted on the weather channel I generally know it is going to be a slow day. Now, whether that is because of the increased dispersal of scent or because it becomes too noisy for deer to feel comfortable traveling I just don' t know. I am guessing your interest is because of the high winds forecasted for today and tomorrow? I think sustained winds of over 40 mph would classify as poor whitetail hunting weather....