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The skier on one slope may judge the snow on a nearby slope by considering its relative exposure. Thus, if the slope on which he stands is wet from the sun, or is covered with a sun crust due to wet snow being refrozen, he can probably obtain better skiing conditions by crossing to an unexposed north slope, although in this event he must assure himself that the snow there has settled sufficiently to be past a point of danger from new-snow avalanche. Similarly, if the skier knows the direction of the prevailing wind or of the wind which is reported to have existed in the recent past, he can predict where wind crust may have formed and where drifts are likely to be found. He can judge of the probability of wind slab or wind crust if he knows the humidity of the wind which took place. |
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