- Submitted by
- natwillski
- Observations date
- Thursday, January 7, 2021 at 22:00
- Location
- 51.468130° N 116.088360° W
- Reporting on
- Snow conditions
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Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Thursday, January 7, 2021 at 15:00
- Number of avalanches in this report
- 1
- The size of avalanche
- 1.5
- Slab thickness
- 25cm
- Slab width
- 7m
- Run length
- 80m
- Avalanche Character
- Deep persistent slab
- Wind slab
- Trigger type
- Skier
- Trigger subtype
- Accidental
- Start zone aspect
- SW
- Start zone elevation band
- Alpine
- Start zone elevation
- 2,500m
- Start zone incline
- 30°
- Weak layer crystal type
- Surface hoar and facets
- Crust near weak layer
- Yes
- Wind exposure
- Cross-loaded slope
Comments
In Redoubt Bowl, almost up to the rock band, there was about 20cm of powder on a firm base. Frequent pole test didn't show any major weakness. Once we started into the chute, snow conditions had changed. There was some wind loading on both sides of the chute that were forming a soft slab. Some pole test here showed a hollow and shallow base. Hand shears were showing planar results about 25cm down. We chose to head for the dry ridge, bootpack up in the rocks, and take a conservative route down. We skied the ridge staying in the lower incline area near the rocks. Near the bottom of the ridge, the second rider triggered the slab just as he was cutting back into our safe spot. We let the slide go down and then made our way through the narrowest part of the chute.
