Date of Observation: 02/25/2022
Name: Dave Koz
Zone: Northwest Mountains
Route Description: From Irwin
Observed avalanche activity: Yes
Avalanches: significant slide off the SE face of Ruby
Date of Observation: 02/25/2022
Name: Dave Koz
Zone: Northwest Mountains
Route Description: From Irwin
Observed avalanche activity: Yes
Avalanches: significant slide off the SE face of Ruby
Location: Lake Irwin (Robinson Basin, Owen, Ruby)
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: SE
Trigger: Natural
Trigger modifier:
Type: Soft Slab
Failure Plane: Old snow
Relative Size: R2 small
Destructive Size: D2.5
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Ruby SE face