|
WHATDanger Level |
WHYAvalanche Probability, |
WHEREDegree and Distribution |
WHAT TO DORecommended Action |
LOW (green) |
Natural avalanches very unlikely. Human triggered avalanches unlikely. | Generally stable snow. Isolated areas of instability. | Travel is generally safe. Normal caution is advised. |
MODERATE (yellow) |
Natural avalanches unlikely. Human triggered avalanches possible. | Unstable slabs possible on steep terrain. | Use caution in steeper terrain on certain aspects (defined in accompanying statement). |
CONSIDERABLE (orange) |
Natural avalanches possible. Human triggered avalanches probable. | Unstable slabs probable on steep terrain. | Be increasingly cautious in steeper terrain. |
HIGH (red) |
Natural and human triggered avalanches likely. | Widespread natural or human triggered avalanches certain. | Unstable slabs likely on a variety of aspects and slope angles. |
EXTREME (black) |
Travel in avalanche terrain is not recommended. Safest travel on windward ridges of lower angle slopes without steeper terrain above. | Extremely unstable slabs certain on most aspects and slope angles. Large, destructive avalanches possible. | Travel in avalanche terrain should be avoided and travel confined to low angle terrain well away from avalanche path run-outs. |
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