|Region:||Chugach State Park|
|Location:||Ptarmigan - S. Couloir|
Route & General Observations
Strong headwind as we made our way up the valley. Turned around about halfway up due wind, stability concerns, and not wanting to be exposed to the high consequence terrain. I triggered a wind slab on our way down, broke below my feet and my partners were in a safe zone so it did not carry anyone.
|Trigger||Skier||Avalanche Type||Hard Slab||Aspect||North Northeast|
|Elevation||unknown||Slope Angle||unknown||Crown Depth||10in|
Skier triggered hard wind slab
Obvious signs of instability
|Recent Avalanches?||Yes||Collapsing (Whumphing)?||No||Cracking (Shooting cracks)?||Yes|
Point releases on south facing slopes, started to get shooting cracks at our turnaround point.
Strong down valley wind, temperature was probably in the 20's
Lower half of the run was soft, slightly wind affected powder. Transitioned into variable windboard with pockets of powder as we got higher up.
Hand pit tests showed that the wind affected snow was not bonding well to the old surface.