An explanation of each level of the Avalanche Danger Scale, including the transitions between levels, signs of instability at each level and the implications of slope angle, aspect and elevation.
Backcountry Avalanche Safety
Persistent weak layers such as layers of surface hoar, cohesionless facets and old rain or sun crusts are the usual cause of avalanches that release in old snow layers.
Avalanche Forecasts are your primary source of information whether skiing, boarding, snowshoeing, or scrambling and climbing in avalanche terrain.
