Hazard rating definition table
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Definition
Avalanche hazard; avalanche danger is the potential for an avalanche(s) to cause damage to something of value. It is a function of the likelihood of triggering and the destructive size of the avalanche(s). It implies the potential to affect people, facilities or things of value, but does not incorporate vulnerability or exposure to avalanches. Avalanche hazard is commonly expressed using relative terms such as high, moderate and low.
Avalanche Hazard Rating Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
| Danger Level | Likelihood of Avalanches | Avalanche Size and Distribution |
| 5 | Natural and artificially triggered avalanches almost certain. | > Size 3 avalanches are widespread. |
| 4 | Natural avalanches likely; artificially triggered avalanches very likely. | Size 2-3 avalanches are widespread; or > size 3 avalanches in specific areas. |
| 3 | Natural avalanche possible; artificially triggered avalanches likely. | < Size 2 avalanches are widespread; or size 2-3 avalanches in specific areas; or > size 3 avalanches in isolated areas. |
| 2 | Natural avalanche unlikely; artificially triggered avalanches possible. | < Size 2 avalanches in specific areas; or size 2-3 avalanches in isolated areas. |
| 1 | Natural and artificially triggered avalanches unlikely. | < Size 2 avalanches in isolated areas or extreme terrain. |
