Observer Name
Kirk Chester/ Justin Bagnell / Cal Taylor
Observation Date
Monday, February 19, 2018
Avalanche Date
Monday, February 19, 2018
Region
SE Idaho » BeaverCreek Canyon » Gibson Basin » Hidden Lake
Location Name or Route
Gibson Basin, Near Beaver Mountain
Elevation
9,000'
Aspect
East
Slope Angle
39°
Trigger
Snowmobiler
Trigger: additional info
Remotely Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Persistent Weak Layer
Weak Layer
Facets
Depth
2'
Width
250'
Vertical
600'
Comments
2 Snowmobilers were riding the ridge on safe terrain causing this remote triggered avalanche. One rider had dropped down just in time to see the snow settling. The slide broke at the apex of a wind loaded ridge and dropped roughly 600 vertical feet before coming to a stop. From the pictures it appears that the slide stepped down at least one layer of snow. The remaining slopes to the north looked to be ready to release at any time so the group decided against getting any closer to view the crown of the slide.
Coordinates