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North American Avalanche Danger Scale (adopted 2010)

Use your zoom keys to enlarge the above or Click the picture or here to download PDF version

Back of North American Avalanche Danger Level Card

Use your zoom keys to enlarge the above or Click the picture or here to download PDF version

Watch, Warning and Special Statement Criteria for the Northwest:

Warning = Extreme or high avalanche danger occurring or expected to occur within 12 hours: at or below 4000 feet in the Olympics and/or WA Cascades; at or below 5000 feet in the Mt. Hood Area.

Watch = Warning conditions expected within 12-48 hours.

Special Conditions = Unusual conditions meriting special attention that do not meet Watch or Warning criteria.

Click here for the ISSW 2010 paper on the new North American Public Avalanche Danger Scale

Click here for a description of the NWAC avalanche danger rose

Click here for comparison with recent North American Avalanche Danger Scale (1997-2010)

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North American Avalanche Danger Scale (adopted 2010)

Back of North American Avalanche Danger Level Card

Watch, Warning and Special Statement Criteria for the Northwest: