BC Zone Observation Report
Saturday, January 28, 2017 at 12:00 AM
Overcast, temps 15-20F, 12,000Ft NW winds 15-35mph with visible transport and pedestaling of old tracks near ridgetops
No signs of instability noted below or near treeline. Significant wind transport and recent wind slab development noted.
At some point likely between 12-12:!5 there was what appeared to be a human triggered avalanche across butler gulch on the east shoulder of Oyster. ~R3 D2.5 NE ATL 11,800ft lee side, variable crown depth. Two skiers at base of slide on top of debris pile seen through binoculars from our location across the valley. They spent around 10 minutes on debris pile before descending, no evidence that a member of the party was buried. Due to distance and poor light was unable to determine if there were skier entry tracks. GPS approx 39.760144Â°-105.872642Â°
AS / u