Tree Well and Snow Immersion Suffocation (SIS)

Suffocation HazardSkiing and snowboarding off the groomed runs and in deep powder is one of the most exciting and appealing parts of the sport. However, if you decide to leave the groomed trails you are voluntarily accepting the risk of a deep snow immersion accident. A deep snow, or tree well immersion accident occurs when a skier or rider falls into an area of deep unconsolidated snow and becomes immobilized and suffocates. Deaths resulting from these kinds of accidents are referred to as a SIS harzards or Snow Immersion Suffocation. Become educated on how to reduce the risk of SIS hazards through your own action and awareness.

  • ALWAYS ski or ride with a partner.
  • KEEP your partner in sight.
  • AVOID tree wells