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Recent avalanches indicate that the snowpack is unstable.
Signs of unstable snow include cracking or collapsing, whumpfing sounds, or 'drum-like' sounds.
Significant snowfall or rain can make the snowpack unstable for several days.
Wind is a significant factor in avalanche activity. Avoid cornices and drifts on steep slopes.
Rain, strong solar radiation, or extended periods of above freezing temperatures can cause the avalanche danger to rise.
Persistent slabs may be triggered weeks after a storm. Check the Avalanche Forecast to find out if they exist in your area.
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