- Submitted by
- chartmetz
- Observations date
- Sunday, December 22, 2019 at 21:15
- Location
- 52.958660° N 118.140140° W
- Reporting on
- Snow conditions
%2F-118.14014%2C52.95866%2C8%2C0%2C0%2F1026x200%3Faccess_token%3Dpk.eyJ1IjoiYXZhbGFuY2hlY2FuYWRhIiwiYSI6ImNqd2dvZmUxdzE4ZWg0M2tkaXpuNG95aTQifQ.pBLM87fE3sIxRJqJT7Bf7g&w=1200&q=75 "Pyramid Avalanche")
Quick
Avalanche
Snowpack
Weather
Incident
Information
- Avalanche date/time
- Sunday, December 22, 2019 at 14:15
- Estimated occurrence time of avalanche
- From 12 to 24 hours ago
- Number of avalanches in this report
- 1
- The size of avalanche
- 2
- Slab thickness
- 30cm
- Slab width
- 100m
- Run length
- 80m
- Avalanche Character
- Storm slab
- Trigger type
- Natural
- Start zone aspect
- NE
- Start zone elevation band
- Alpine
- Start zone elevation
- 2,200m
- Start zone incline
- 35°
- Weak layer crystal type
- Storm snow
- Wind exposure
- Lee slope
- Vegetation cover
- Open slope
Comments
Storm slab released immediately below a large cliff on the lower NE face of Pyramid Mountain. This is the slope that one often scoots under when exiting the main run. Measurements are estimated, I was solo and did not enter any avalanche terrain today. Propagation of the storm slab seemed large relative to its runout distance.
