Date of Observation: 03/29/2023
Name: Zach Guy
Zone: Northwest Mountains
Route Description: Ruby Range, viewed from Mt. CB
Observed avalanche activity: Yes
Avalanches: A couple of large cornice falls (Owen and Scarp Ridge), a handful of small wet loose on S-E aspects A/NTL, and a hot wind slab. These are new since I put binos on the same terrain yesterday around 11 a.m.
Weather: Clouds increased mid-day. Above freezing temps.
Photos:
-
-
Owen cornice fall
-
-
Scarp Ridge cornice fall
-
-
Wet loose Peeler Peak
-
-
Small slab and wet loose OBJ
-
-
Wet Loose Hancock
-
-
Wind slab on Bichmond, first observed yesterday.
Estimated avalanche date: 03/29/2023
Number of Avalanches: 1
Location
Location: Lake Irwin (Robinson Basin, Owen, Ruby)
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: E
Characteristics
Trigger: Natural
Trigger modifier:
Type: Cornice
Failure Plane:
Size
Relative Size: R2 small
Destructive Size: D2.5
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
Involvements
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Mt. Owen
Estimated avalanche date: 03/29/2023
Number of Avalanches: 1
Location
Location: Peeler Basin
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: NE
Characteristics
Trigger: Natural
Trigger modifier:
Type: Cornice
Failure Plane:
Size
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):
Involvements
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Scarp Ridge
Estimated avalanche date: 03/29/2023
Number of Avalanches: 4
Location
Location: Oh-Be-Joyful Basin
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: SE
Characteristics
Trigger:
Trigger modifier:
Type: Wet Loose
Failure Plane: Within storm snow
Size
Relative Size: R1 very small
Destructive Size: D1- Relatively harmless to people
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
Involvements
# of people caught:
# of partial burials:
# of full burials:
Additional comments: E to S aspects.
Estimated avalanche date: 03/29/2023
Number of Avalanches: 1
Location
Location: Oh-Be-Joyful Basin
Location Specific:
Start Zone Elevation: NTL: Near Tree Line
Aspect: SE
Characteristics
Trigger: Natural
Trigger modifier:
Type: Soft Slab
Failure Plane:
Size
Relative Size: R1 very small
Destructive Size: D1.5
Avg. crown height (inches):
Avg. width (feet):
Avg. vertical run (feet):
Involvements
# of people caught:
# of partial burials:
# of full burials:
Additional comments: OBJ Peak
Estimated avalanche date: 03/28/2023
Number of Avalanches: 1
Location
Location: Poverty Gulch (Pittsburg, Augusta, Baxter Basin)
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: E
Characteristics
Trigger: Natural
Trigger modifier:
Type: Soft Slab
Failure Plane:
Size
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):
Involvements
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Bichmond wind slab. Evan spotted this 3/28.
6175
