Difference between revisions of "Hazard rating definition table"
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(→North American Public Avalanche Danger Scale) |
(→Avalanche Hazard Rating Scale) |
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==Definition== | ==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'''; '''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 Rating Scale== | ==Avalanche Hazard Rating Scale== | ||
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|class="Header"|Danger Level | |class="Header"|Danger Level | ||
| − | |class="Header"|Likelihood of | + | |class="Header"|Likelihood of Triggering |
| − | |class="Header"| | + | |class="Header"|Size and Distribution |
|- | |- | ||
|class="Class" style="background-color:#231F20; color:#ffffff;"|5 | |class="Class" style="background-color:#231F20; color:#ffffff;"|5 | ||
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|- | |- | ||
|class="Class" style="background-color:#F7941E;"|3 | |class="Class" style="background-color:#F7941E;"|3 | ||
| − | |Natural | + | |Natural avalanches 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. | |< Size 2 avalanches are widespread; or size 2-3 avalanches in specific areas; or > size 3 avalanches in isolated areas. | ||
|- | |- | ||
|class="Class" style="background-color:#FFF200;"|2 | |class="Class" style="background-color:#FFF200;"|2 | ||
| − | |Natural | + | |Natural avalanches unlikely; artificially triggered avalanches possible. |
|< Size 2 avalanches in specific areas; or size 2-3 avalanches in isolated areas. | |< Size 2 avalanches in specific areas; or size 2-3 avalanches in isolated areas. | ||
|- | |- | ||
Latest revision as of 13:02, 25 January 2017
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 Rating Scale
Avalanche danger is determined by the likelihood, size and distribution of avalanches.
| Danger Level | Likelihood of Triggering | 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 avalanches 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 avalanches 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. |
