| Trigger | Skier | Remote Trigger | 0 |
| Avalanche Type | Soft Slab | Aspect | Northwest |
| Elevation | 2000ft | Slope Angle | 38deg |
| Crown Depth | 2ft | Width | 50ft |
| Vertical Run | 100ft |
Avalanche: Turnagain
Location: Tincan
Standard up track to 2300′ and skied trees out.
Avalanche Details
Numerous skier triggered/remote triggered D1 on various aspects below treeline.
Largest avalanche described above, and photos included. D1.5, 50' width, 100' length, bed surface 12/24/16 rimed surface hoar.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | Yes |
Observer Comments
Collapsing any time off the skin track. Multiple collapses on the same slope.
Small shooting cracks on steep rollover.
Weather
Broken sky, occasional very light snow. Temps in the high 20s. Occasional light wind from the north.
Snow surface
2' to 2.5' of new snow along the route, since 12/24/16.
Ski penetration of 12" to 18".
Boot pen to neck in places.
Snowpack
2' to 2.5' of new snow on top of facets.
New snow and recently buried facets moist at 1000'. At 1500' the new snow was dry for the first foot. New snow under a foot was moist and the facets at the new snow interface below were also moist. Dry snowpack at 2000'.
Pit at 2200'
WSW Aspect. 25deg slope. Height of Snow 160cm.
CT1SC, CT3SC 74cm down on 12/24/16 buried surface hoar
Slab was fist hard to 4 finger +
ECTPV on the same layer
PST33/100END on the same layer
Note: Slope collapsed multiple times as we were digging the pit.
Pit referenced above
D1.5 soft slab avalanche as discussed above
Crown face of the D1.5
Another angle of the avalanche
Boot pen? Yes.