Wind on glaciers

In glacial regions ridges and passes are seldom non turbulent, and the valleys get high velocity and turbulent winds which can uproot shelters if not properly anchored and secured. The higher the altitude, the greater the wind velocity. High altitude combined with low temperature and glaciation gives rise to very strong local winds, of speeds of as high as 150 kmph, thus adding to the problem of windchill beyond human endurance. A person protected by special EEC (Extra Cold Clothing) can
stand temperatures of minus 25 C without any wind. However, with a fall in ambient temperature below minus 30 C, the human body experiences a windchill effect.

Gore-Tex material, though expensive, is highly recommended for very low temperatures. Another alternative is Kashmiri Pashmina wool.