LOW DANGER ...snow is
generally
stable with only isolated areas of instability. Natural avalanches are
very unlikely, while human triggered avalanches are
unlikely.
Backcountry travel is generally safe. Normal caution is advised.
MODERATE DANGER ...unstable slab
layers are possible on steep terrain. Natural avalanches are unlikely,
while human triggered avalanches are possible. Backcountry travelers
should use caution in steeper terrain on certain aspects.
CONSIDERABLE DANGER ...unstable
slab layers are probable on steep terrain. Natural avalanches are
possible, while human triggered avalanches are probable.
Backcountry travelers should be very cautious in steeper terrain. Be aware
of potentially dangerous areas of unstable snow.
HIGH DANGER ...unstable slab layers
are likely on a variety of aspects and slope angles. Both natural
and human triggered avalanches are likely. Travel in avalanche terrain
is not recommended. Safest travel is on windward ridges or on lower angle
slopes without steeper terrain above.
EXTREME DANGER ...extremely
unstable slab layers exist on most aspects and slope angles. Widespread
natural and human triggered avalanches are certain . Large destructive
avalanches are possible. Travel in avalanche terrain should be avoided
and travel confined to low angle terrain well away from avalanche path
runouts.
