Date of Observation: 12/31/2022
Name: Eric Murrow
Zone: Southeast Mountains
Route Description: Nordic skied first mile of Gothic Road. Walked few hundred feet below the road to get above a steep northeast-facing slope.
Observed avalanche activity: Yes
Avalanches: Remote triggered an avalanche on a northeast-facing slope. Did not hear the collapse, but saw the powder cloud form out the bottom. It broke in three places and as it ran entrained much of the generally weak snowpack.
Weather: S2 snowfall from 1130 to1. Winds light with little evidence of recent blowing snow on roadway.
Snowpack:
Photos:
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This was triggered from well above the cliff. This avalanche ran into a terrain trap below, but given the volume of entrainment as the slab ran, I think it could have buried a person without the terrain trap.
Estimated avalanche date: 12/31/2022
Number of Avalanches: 1
Location
Location: Snodgrass
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: R1 very 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: Small end D2 but could have buried a person. Much of the volume was from entertainment as it ran through a faceted snowpack.
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