Observer Name
Jeremy Jensen
Observation Date
Sunday, March 15, 2020
Avalanche Date
Sunday, March 15, 2020
Region
Logan » Logan River » Tony Grove » Cornice Ridge » Grandfather Bowl
Location Name or Route
Grandfather Bowl
Elevation
9,400'
Aspect
Northeast
Slope Angle
39°
Trigger
Unknown
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
New Snow
Weak Layer
New Snow
Depth
12"
Width
60'
Vertical
200'
Comments
Likely caused by small cornice fall that may have been triggered by snowmobile traffic on the ridge. I saw riders pass by upper ridge near the avalanches spot earlier in the day and when I got up to that area the avalanche was pretty fresh.
looked to be 12-16" deep running a couple hundred feet. Large pieces of cornice slid much farther down than the debris pile. Windloaded ridges were sensitive today and cornices breaking easily.
Coordinates