Balfour creek

Map for Mountain Information Network report: Balfour creek

Information

Activity
Climbing/Mountaineering
Skking on approach to climb Orion Falls

Group details

Total in the group?
3
People partly buried with normal breathing?
2
People not injured (caught but not buried)?
2
People involved?
4

Terrain details

Terrain shape at trigger point
Convex
Snow depth at trigger point
Variable
Terrain traps
  • Cliff
  • Slope transition or bench

Comments

We triggered a size 1 slab avalanche yesterday on approach to Orion Falls, see pictures. We were traversing right beneath the climb when the first skier triggered the slope in a shallow thick to thin snowpack area, after cutting a small convex roll. The fracture propagated up and left from him, then left across the base of the climb and about 70m above us. 50m wide crown, 0-30cm, soft-medium slab. The 2 remaining skiers were caught by the slide and went for a short ride, 10-15m. Partial burials, one knee deep, second one to waist, both still standing upright when things stopped. That same slope had been skied the day before. Area around us was wind affected with numerous wind slabs.