High is the second highest level on the avalanche danger scale. During periods of high danger, avalanche conditions are very dangerous and travel in avalanche terrain is not recommended. Natural avalanches are likely and human-triggered avalanches are very likely. Large avalanches are expected in many areas or very large avalanches in specific areas.
Under high danger, all avalanche terrain should be avoided. Use extra caution when travelling in simple terrain and stick to very mellow slopes or dense trees that are free of overhead hazard.