Date of Observation: 02/27/2022
Name: Zach Guy
Zone: Northwest Mountains
Route Description: Near Irwin Townsite
Observed avalanche activity: Yes
Avalanches: Shared to CBAC on social media. Small skier triggered persistent slab in a small opening in west facing trees
Location: Lake Irwin (Robinson Basin, Owen, Ruby)
Location Specific:
Start Zone Elevation: BTL: Below Tree Line
Aspect: W
Trigger: Skier
Trigger modifier:
Type: Soft Slab
Failure Plane: Old snow
Relative Size: R1 very small
Destructive Size: D1.5
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
# of people caught:
# of partial burials:
# of full burials:
Additional comments:
