Date of Observation: 02/26/2022
Name: Zach Guy
Zone: Northwest Mountains
Route Description: East Beckwith. Traveled on N to NE aspects to 11,500 ft.
Observed avalanche activity: Yes
Avalanches: Remotely triggered a slab avalanche that broke 2 feet deep on the sandbox layer from about 50 feet away. Documented a pile of natural avalanches that ran during the storm up to D2 in size that fit the pattern of what we’ve been seeing so far. See photos and details below.
Weather: Clear, light winds.
Snowpack: Snowpack continues to produce frequent signs of instability below treeline, with numerous collapses and shooting cracks on skis and tree shaking collapses on snowmobile. Slabs below treeline are 55 to 60cm, up to 4F hard, above Fist hard 2mm+ facets. As we gained near treeline, the snowpack quieted down. Pits at 10,700 and 11,500 did not produce propagating results. Slabs were up to 85 cm and 1F hard over 1-1.5mm 4F facets at our high point.
Photos:
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We remotely triggered this slide from about 50 feet away
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One of many rumbling collapses and shooting cracks observed BTL
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East Beckwith (NE)
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Anthracite Dyke (E)
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East Beckwith (NE)
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East Beckwith (NE)
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West Beckwith (NE)
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East Beckwith (E/NE)
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East Beckwith (E/NE)
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Estimated avalanche date: 02/26/2022
Number of Avalanches: 1
Location
Location: Beckwith Range
Location Specific:
Start Zone Elevation: BTL: Below Tree Line
Aspect: NE
Characteristics
Trigger: Skier
Trigger modifier: Remote
Type: Soft Slab
Failure Plane: Old snow
Size
Relative Size: R2 small
Destructive Size: D1.5
Avg. crown height (inches): 24
Avg. width (feet):
Avg. vertical run (feet):
Involvements
# of people caught:
# of partial burials:
# of full burials:
Additional comments: Near Lost Lake. E/NE aspect
Estimated avalanche date: 02/23/2022
Number of Avalanches: 6
Location
Location: Beckwith Range
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: Ran mid storm. Failure date estimated.
4xEast Beckwith. 2x West Beckwith
Estimated avalanche date: 02/23/2022
Number of Avalanches: 1
Location
Location: Beckwith Range
Location Specific:
Start Zone Elevation: NTL: Near 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: Near Dollar Lake. Ran mid storm. Failure date estimated.
Estimated avalanche date: 02/23/2022
Number of Avalanches: 3
Location
Location: Anthracite Range
Location Specific:
Start Zone Elevation: BTL: Below Tree Line
Aspect: E
Characteristics
Trigger: Natural
Trigger modifier:
Type: Soft Slab
Failure Plane: Old snow
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: Anthracite Dyke
Estimated avalanche date: 02/23/2022
Number of Avalanches: 6
Location
Location: Beckwith Range
Location Specific:
Start Zone Elevation: BTL: Below Tree Line
Aspect: E
Characteristics
Trigger: Natural
Trigger modifier:
Type: Soft Slab
Failure Plane: Old snow
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: East Beckwith and near Cliff Creek. D1.5 and a couple D1.
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