Date of Observation: 03/28/2023
Name: Irwin Guides
Zone: Northwest Mountains
Route Description: Viewed from Irwin Tenure
Observed avalanche activity: Yes
Avalanches: Several fresh wind slabs above treeline, new since yesterday afternoon. Likely ran overnight.
Location: Lake Irwin (Robinson Basin, Owen, Ruby)
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: E
Trigger:
Trigger modifier:
Type: Soft Slab
Failure Plane:
Relative Size: R2 small
Destructive Size: D2 – could bury, injure, or kill a person
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Ruby/Owen Saddle and East face of Owen.
Location: Oh-Be-Joyful Basin
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: SE
Trigger: Natural
Trigger modifier:
Type: Soft Slab
Failure Plane:
Relative Size: R2 small
Destructive Size: D2 – could bury, injure, or kill a person
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Afley SE face
