Canadian Avalanche Danger Descriptors 1998

Danger Level and Color	Probability and Trigger	Recommended Action
Low	Natural avalanches very unlikely. Human triggered avalanches unlikely.	Travel is generally safe. Normal caution advised.
Moderate	Natural avalanches unlikely. Human triggered avalanches possible.	Use caution in steeper terrain on certain aspects.
Considerable	Natural avalanches possible. Human triggered avalanches probable.	Be increasingly cautious in steeper terrain.
High	Natural and human triggered avalanches likely.	Travel in avalanche terrain is not recommended.
Extreme	Widespread natural or human triggered avalanches certain.	Travel in avalanche terrain should be avoided and confined to low angle terrain, well away from avalanche path runouts.