Polaris MATRIX INDY VR1 Series Owner's Manual page 23

North American Public Avalanche Danger Scale
Avalanche danger is determined by the likelihood, size and distribution of
avalanches.
DANGER LEVEL
5
Extreme
4
High
3
Considerable
2
Moderate
1
Low
Safe backcountry travel requires training and experience. You control your own risk by
TRAVEL ADVICE
Avoid all avalanche
terrain.
Very dangerous
avalanche
conditions. Travel
in avalanche terrain
not recommended.
Dangerous
avalanche
conditions. Careful
snowpack
evaluation,
cautious route-
finding and
conservative
decision-making
essential.
Heightened
avalanche
conditions on
specific terrain
features. Evaluate
snow and terrain
carefully; identify
features of
concern.
Generally safe
avalanche
conditions. Watch
for unstable snow
on isolated terrain
features.
choosing where, when and how you travel.
LIKELIHOOD
OF
AVALANCHES DISTRIBUTION
Natural and
human-triggered
large avalanches
avalanches
certain.
Natural
avalanches
likely; human-
triggered
avalanches very
likely.
Natural
avalanches
possible;
large avalanches
human-triggered
in specific areas;
avalanches
likely.
Natural
avalanches
unlikely; human-
specific areas; or
triggered
large avalanches
avalanches
in isolated areas.
possible.
Natural and
human-triggered
avalanches
isolated areas or
unlikely.
extreme terrain.
SAFETY
AVALANCHE
SIZE AND
Large to very
in many areas.
Large
avalanches in
many areas; or
very large
avalanches in
specific areas.
Small
avalanches in
many areas; or
or very large
avalanches in
isolated areas.
Small
avalanches in
Small
avalanches in
21