Hazard rating definition table

From InfoEx Help Information
Revision as of 14:01, 25 January 2017 by Admin (talk | contribs) (Avalanche Hazard Rating Scale)
Jump to navigation Jump to search

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 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 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 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.


Source: https://c.ymcdn.com/sites/www.avalancheassociation.ca/resource/resmgr/InfoEx/IAG_-_Hazard_Rating_&_Guidan.pdf

Related documents