11th Annual Utah Snow & Avalanche Workshop Open and Motorized Sessions Oct. 27th.
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Observer Name: 
Kirk Chester/ Justin Bagnell / Cal Taylor
Observation Date: 
Monday, February 19, 2018
Avalanche Date: 
Monday, February 19, 2018
Region: 
Hidden Lake
Location Name or Route: 
Gibson Basin, Near Beaver Mountain
Elevation: 
9000
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: 
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