Avalanche
- Run Length
- 25
- Slab Width
- 10
- Trigger Type
- skier
- Avalanche Size
- 1
- Slab Thickness
- 100
- Trigger Sub Type
- accidental
- Start Zone Aspect
- SE
- Vegetation Cover
- openSlope
- Start Zone Incline
- 32
- Avalanche Character
- deepPersistentSlab, persistentSlab
- Crust Near Weak Layer
- 1
- Number Of Avalanches
- 2-5
- Start Zone Elevation
- 1780
- Runout Zone Elevation
- 36
- Weak Layer Crystal Type
- surfaceHoarAndFacets, stormSnow
- Start Zone Elevation Band
- btl
- Avalanche Occurrence Datetime
- 2021-02-23T14:30:00
Incident
- Group Size
- 2
- Group Activity
- skiing
- Number Involved
- 1
- Number Caught Only
- 1
- Snow Depth Trigger Point
- average
- Terrain Shape Trigger Point
- convex
Covering 2 avalanches in this report. The first, a size 1 loose dry slab, was the result of a 10:30 am ski cut above terrain that we had identified as hazardous. Our plan was to skin back up this aspect after skiing our objective, so we chose to ski this terrain on our way out, hoping to mitigate some of the risk. What started as sluff quickly picked up mass, and triggered a loose dry slab 30m below ski cut. We then proceeded to ski directly over a small convexity to skiers left of our loose dry slab, with no signs of instability. We moved on to ski our objective, and returned to this piece of terrain approximately 4 hours later. As we were travelling uphill, the first member of our party skinned over the small convexity, hearing a distinct whumph in the snow. The next person followed, hearing and feeling a second whumph, the next step taken triggered a slab to release. Top slab approximately 60cm, stepped down to approximately 100cm total.