 |
Danger
Level
(& Color) |
Avalanche
Probability and Avalanche Trigger |
Degree
and Distribution of Avalanche Danger |
Recommended
Action
in the Backcountry |
| ...WHAT...
|
...WHY... |
...WHERE... |
...WHAT TO DO... |
(GREEN) |
Natural avalanches
very unlikely. Human triggered avalanches unlikely |
Generally stable
snow. Isolated areas of instability. |
Travel is generally
safe. Normal caution is advised. |
(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). |
(ORANGE)
|
Natural avalanches
possible. Human triggered avalanches probable. |
Unstable slabs
probable on steep terrain. |
Be increasingly
cautious in steeper terrain. |
(RED) |
Natural and
human triggered avalanches likely. |
Unstable slabs
likely on a variety of aspects and slope angles. |
Travel in avalanche
terrain is not recommended. Safest travel on windward ridges
of lower angle slopes without steeper terrain above. |
(BLACK) |
Widespread
natural or human triggered avalanches certain. |
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. |
