- Submitted by
- ronberlie
- Observations date
- Saturday, February 8, 2020 at 18:00
- Location
- 49.353048° N 119.900202° W
- Reporting on
- Snow conditions
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Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Saturday, February 8, 2020 at 09:40
- Number of avalanches in this report
- 1
- The size of avalanche
- 3.5
- Slab thickness
- 150cm
- Slab width
- 200m
- Run length
- 1,000m
- Avalanche Character
- Deep persistent slab
- Trigger type
- Natural
- Start zone aspect
- NE
- Start zone elevation band
- Treeline
- Start zone elevation
- 2,130m
- Start zone incline
- 45°
- Runout zone elevation
- 1,850m
- Weak layer burial date
- Tuesday, December 24, 2019
- Weak layer crystal type
- Depth hoar
- Crust near weak layer
- Yes
- Wind exposure
- Lee slope
Comments
There is confusion regarding the location of this avy. It was not in the Powder 8 bowl on Apex Proper. The start zone is below point 2163m on the ridge south of Apex Proper (across the valley south of Powder 8 bowl), sometimes referred to as Ron’s Ridge. The track was down the north facing slopes on a run referred to as One Skin. The Avy cleared out a large amount of mature timber and left 10+ metres of debris at the common skin up point for skiers or congregation point for sleds, and ran for a further 2-300m past that point over another hill and down into a forested meadow. This slope also slid naturally on 23 Dec 2019 at 11 am but only ran 3/4 length on that day. The end of the runout is considerably north of the furthest run in recent memory. Depth hoar on scree in start zone. Wind change to S-SW flow on Friday evening from predominantly NW flow for 4 days, then switch back to NW flow on Saturday. 150 cms of snowfall in previous week.







