Quick Answer
Steep slopes above 30 degrees become avalanche terrain. Recent heavy snow increases danger dramatically. Temperature warming triggers wet slides. Wind-loaded slopes accumulate unstable snow. Convex slope shapes concentrate stress. Audio warnings—cracking sounds—indicate instability. Conservative routing avoids slope crossing.
Terrain Assessment
Slopes steeper than 30 degrees become avalanche terrain. Aspect affects danger—sun-exposed slopes warm more. Wind-loaded slopes accumulate unstable snow patterns. Gullies concentrate avalanche forces. Convex terrain concentrates stress. Understanding terrain reveals danger.
Snow Condition Evaluation
Recent precipitation increases danger proportionally. Warming causes wet slide danger. Wind loading creates slab conditions. Weak layers beneath strong snow develop instability. Stability testing reveals weak points. Conservative interpretation of uncertain conditions improves survival.
Weather Influences
Rapid temperature increases trigger slides. Wind loads downwind slopes. Precipitation adds immediate weight. Clear nights improve stability. Extended wet cycles trigger slides. Monitoring weather predicts danger changes.
Warning Signs
Cracking snow indicates instability. Whoomphing sounds signal weight transmission. Collapsing snow indicates weak layers. Roller falls from slopes indicate movement. Visual warning signs demand immediate retreat. Audio warnings require cautious response.
Route Planning and Discipline
Avoid slopes during high-danger periods. Time crossing to safest conditions. Cross one person at time minimizing group exposure. Probe slopes assessing stability. Avoid terrain traps concentrating slides. Conservative route discipline prevents burial.
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