Date of Observation: 03/31/2022
Name: Zach Guy
Zone: Northwest Mountains
Route Description: Viewed from Mt. CB.
Observed avalanche activity: Yes
Avalanches: Could see about 10 slab avalanches in the Ruby Range that ran during yesterday or last night’s wind event, ranging from D1.5 to D2, generally above treeline. One gouging wet loose below treeline that looks like it ran Tuesday or maybe even Wednesday.
Weather: Thin cloud cover increased mid day.
Photos:
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Afley and Peeler
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Owen
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Nipple
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Treasury
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Purple
Estimated avalanche date: 03/30/2022
Number of Avalanches: 1
Location
Location: Oh-Be-Joyful Basin
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: NE
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: Afley Peak. Looks like one or two tin wind slabs near ridgeline triggered a larger slab mid slope.
Estimated avalanche date: 03/30/2022
Number of Avalanches: 3
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: 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: Several slabs and debris piles on Mt. Owen, D1.5 maybe up to D2
Estimated avalanche date: 03/30/2022
Number of Avalanches: 2
Location
Location: Upper Slate (Purple, Yule Pass, Paradise Divide)
Location Specific:
Start Zone Elevation:
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: “The Nipple” and Treasury.
Estimated avalanche date: 03/30/2022
Number of Avalanches: 2
Location
Location: Oh-Be-Joyful 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: 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: Little Silver Basin and Peeler Peak
Estimated avalanche date: 03/30/2022
Number of Avalanches: 3
Location
Location: Upper Slate (Purple, Yule Pass, Paradise Divide)
Location Specific:
Start Zone Elevation: ATL: Above Tree Line
Aspect: E
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: Purple Peak near Yule Pass. E to NE aspects. One could have been up to D2.
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