Observer Name
Kirk Fielding
Observation Date
Friday, April 3, 2020
Avalanche Date
Friday, April 3, 2020
Region
Logan » Logan River » Tony Grove » Cornice Ridge » Grandfather Cornice
Location Name or Route
Tony's Grove, Cornice Ridge, Grandfather Cornice
Elevation
9,200'
Aspect
Northeast
Slope Angle
Unknown
Trigger
Snowmobiler
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Wind Drifted Snow
Weak Layer
New Snow/Old Snow Interface
Depth
14"
Width
600'
Vertical
450'
Comments
This is 2 different slides by two different groups of riders. The one under the large cornice happened first. Another group came in shortly after and triggered the second one above the rocky area.
![](https://utahavalanchecenter.org/sites/default/files/styles/observation_image/public/images/avalanches/2019-20/20200403_145516.jpg?itok=YSqB-e4f)
![](https://utahavalanchecenter.org/sites/default/files/styles/observation_image/public/images/avalanches/2019-20/20200403_145126.jpg?itok=NN2BP2OL)
![](https://utahavalanchecenter.org/sites/default/files/styles/observation_image/public/images/avalanches/2019-20/20200403_145508.jpg?itok=A-1cjbAO)
Coordinates