Quick Answer
Common terrain features that indicate avalanche risk include steep slopes, recent snowfall, and terrain traps such as gullies and bowls. These features can increase the likelihood of a slide and make it more difficult to escape. Understanding these features is crucial for safe navigation in avalanche terrain.
Recognizing Steep Slopes
Avalanche terrain often features steep slopes, typically with angles of 30-45 degrees or more. These slopes can be identified using a clinometer, a device that measures the angle of a slope. When navigating, always assume that any slope with an angle greater than 30 degrees may be unstable.
Identifying Terrain Traps
Terrain traps are areas where a slide can be funneled into a smaller space, increasing the speed and force of the slide. Examples of terrain traps include gullies, bowls, and narrow canyons. When navigating, always be aware of your surroundings and identify potential terrain traps.
Interpreting Snow Conditions
Avalanche risk is also influenced by the condition of the snowpack. Look for recent snowfall, especially if it has fallen on a layer of older, more cohesive snow. This can create a weak layer that is prone to sliding. Additionally, be aware of the presence of windslab, which can form on steep slopes and be highly unstable.
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