Skier Triggered 2.5

Quick report

avalanche.safety · Apr 26, 2025 · Bow Valley

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Observation photo 1Observation photo 2Observation photo 3

Avalanche

Run Length
700
Slab Width
40
Trigger Type
skier
Avalanche Size
2.5
Trigger Sub Type
accidental
Start Zone Aspect
E
Start Zone Incline
35
Avalanche Character
deepPersistentSlab, wetSlab
Number Of Avalanches
1
Start Zone Elevation
2460
Runout Zone Elevation
2030
Avalanche Observation
12hrsAgo
Weak Layer Crystal Type
facets
Start Zone Elevation Band
alp
Avalanche Occurrence Datetime
2025-04-26T20:00:00.000Z

Solo skier triggered Sa a large full-depth avalanche within the first 2 turns of Miner's Gully and was carried 500 to 600m down the feature. No burial, no injuries, one lost pole. Incident was witnessed by third party that called 911. Once it was confirmed that the solo skier was ok, the debris was searched with a helicopter external transceiver and RECCO device with no other clues found. Avalanche initially triggered on basal facets in shallow snowpack start zone. Lower down the avalanche appeared to fail as a wet slab. Air temp during the search ranged from +8C to +12C depending on elevation. This avalanche serves as a good reminder of why it is important to star early and finish early during spring conditions. It is a very clear example how stability can dramatically deteriorate with intense daytime warming. This increases the probability of triggering loose wet and/or dangerous deep persistent and wet slab avalanches. (Note: the party visible in the last photo is of the 2 climber who had reported the avalanche and were attempting to initiate a rescue until Kananaskis Mountain Rescue Arrived. They then left the scene and removed themselves from avalanche terrain once the helicopter was on the scene.)

Incident

Group Size
1
Terrain Trap
gullyDepression
Group Activity
skiing
Number Involved
1
Number Caught Only
1
Snow Depth Trigger Point
shallow
Terrain Shape Trigger Point
planar

Solo skier triggered Sa a large full-depth avalanche within the first 2 turns of Miner's Gully and was carried 500 to 600m down the feature. No burial, no injuries, one lost pole. Incident was witnessed by third party that called 911. Once it was confirmed that the solo skier was ok, the debris was searched with a helicopter external transceiver and RECCO device with no other clues found. Avalanche initially triggered on basal facets in shallow snowpack start zone. Lower down the avalanche appeared to fail as a wet slab. Air temp during the search ranged from +8C to +12C depending on elevation. This avalanche serves as a good reminder of why it is important to star early and finish early during spring conditions. It is a very clear example how stability can dramatically deteriorate with intense daytime warming. This increases the probability of triggering loose wet and/or dangerous deep persistent and wet slab avalanches. (Note: the party visible in the last photo is of the 2 climber who had reported the avalanche and were attempting to initiate a rescue until Kananaskis Mountain Rescue Arrived. They then left the scene and removed themselves from avalanche terrain once the helicopter was on the scene.)