Avalanche
Signs
recent snowfall
After 24 hours of 12 inches or more of snowfall is when an avalanche is more likely to occur. If hiking, be alert for warning signs and keep out of danger zones.
cracking or whooping noise
This indicates the presence of wind slab - an unstable form of snow. Whooping noises are created, usually by the weight of the traveller, as a sign that the snow pack is collapsing.
rising temperature
A rising temperature may partially melt snow structures, causing it to become more mobile. Watch for rolling balls and natural snow slides , which indicate wet, unstable snow.
crystal on snow layer
Hoarfrost are tiny crystals that form on top of snow, creates a very loose layer prone to collapsing when it snows on top of it. It is used as a telltale warning sign for avalanches.
Surviving An Avalanche
jump above the slope
When avalanches are triggered, the snow beneath you will begin to fall; you may be able to avoid being caught in the slide if you jump upslope to safety before you get caught.
move perpendicular
One of the best strategies to avoid getting caught is to move sideways out of the flow as soon as you notice an avalanche, no matter where you are when it actually starts.
grab sturdy structure
For smaller, less powerful avalanches, holding onto a large, static object can keep you within your current location. This helps you not to become disoriented.
"swim" on top of snow
If caught in an avalanche, try to stay afloat above the flow by swimming in the direction the snow is sliding. This is in order to avoid being buried and trapped under it.
COMMON TRIGGERS
skiing
snowboarding
snowmobiling
