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Wet-snow avalanches usually occur during a thaw, when the snow or its top layers become saturated. The extra weight and lubrication of this water can weaken the bonds between different snow layers, or between snow and the ground, and may cause a large area to slide. Although easier to predict, this type of avalanche can be particularly descructive due to the high density of wet snow. Wet-snow avalanches can harden rapidly on settling, and so it can be extremely difficult to escape from them unless this is done immediately.

Avalanche avoidance

Before starting out

Avalanche awareness should start long before the mountains are reached. Monitoring the weather in the days prior to a climbing trip is a basic precaution, with heavy snowfall accompanied by wind being the main danger sign. Long periods of cold temperatures tend to make any danger last longer, while a freezing level that rises and falls rapidly usually quickly consolidates the snow pack. Be aware of the recent and forecast wind direction, as the greatest danger is likely to be on lee slopes, the place where windslab accumulates. Consult the snow and avalanche forecast, and consider possible alternatives should conditions turn out to be worse than expected. Seek expert local advice – avalanches tend to have local characteristics. Have the appropriate equipment and know how to use it.