South Valhallas
Quick reportdastarddownhill · Dec 15, 2024 · Valhalla
Quick report
- Weather
- cloudy, cold, sunny, windy
- Ride Type
- alpineSlopes, convexSlopes, cutBlocks, denseTrees, openTrees, steepSlopes, sunnySlopes
- Riding Quality
- good
- Snow Conditions
- powder, windAffected
Upper alpine north run produced no results with ski cut. group of 4 rode large alpine line in complex terrain with multiple safe zones throughout. Final, lowest elevation pitch, which was also the steepest had slightly more wind effect leading into steeper terrain, and probably some preserved surface hoar in the more protected gully feature, which was loaded up. Rider rode from mini ridge feature dropping in and across gully feature triggering slab avalanche 30-40cms deep at the fattest. Took a small tumble then was able to get back on feet and ride out of moving slab avalanche and exit about halfway down. Avalanche only ran a total 50-100m before stopping. midslope. Fairly low consequence slope but obviously enough snow loaded up to be an issue.
Weather
- Avg Temp
- -6
- Wind Speed
- windSpeedModerate
- Blowing Snow
- none
- Sky Condition
- brokenClouds
- Temperature Trend
- falling
- Precipitation Type
- none
Sunny in morning, overcast and colder time of avalanche. Cold day getting colder. Light to moderate patchy wind.
Snowpack
- Depth
- 158
- Obs Type
- summary
- Site Aspect
- N, NE
- Site Elevation
- 2050
- Site Elevation Band
- tln
Avalanche
- Run Length
- 75
- Slab Width
- 20
- Trigger Type
- skier
- Wind Exposure
- crossLoadedSlope
- Avalanche Size
- 1.5
- Slab Thickness
- 10
- Trigger Sub Type
- accidental
- Start Zone Aspect
- N, NE
- Vegetation Cover
- sparseTrees
- Start Zone Incline
- 35
- Avalanche Character
- corniceOnly, stormSlab, windSlab
- Crust Near Weak Layer
- 1
- Number Of Avalanches
- 1
- Start Zone Elevation
- 2050
- Runout Zone Elevation
- 1975
- Weak Layer Burial Date
- 2024-12-13
- Avalanche Observation
- 12hrsAgo
- Weak Layer Crystal Type
- stormSnow, surfaceHoar
- Start Zone Elevation Band
- tln
- Avalanche Occurrence Datetime
- 2024-12-15T19:00:00.000Z
See comment for details. Was not able to gather specifics of slab depth or layers etc. Estimated from photos
Incident
- Group Size
- 4
- Terrain Trap
- noTrap
- Group Activity
- skiing
- Number Injured
- 0
- Number Involved
- 1
- Number Caught Only
- 1
- Number Fully Buried
- 0
- Snow Depth Trigger Point
- deep
- Terrain Shape Trigger Point
- convex
- Number Partly Buried Able Breathing
- 0
- Number Partly Buried Impaired Breathing
- 0