A group of two had accessed the area using snowmobiles and were skiing during the accident. The start zone was described as a thin, rocky, windward slope. The avalanche failed on a weak layer of basal facets, which was buried in mid-November. One subject was buried 1.5 to 2 m deep.
One subject died at the scene. The second was flown to hospital but passed away 12 days after the incident as a result of injuries sustained during the avalanche.