Machine Accidental
Observed Mar 6, 2025, 1:15 p.m. PST · South Rockies
This report was submitted with an older form.
Quick report
- Comment
- Observations from SAR members attending incident site after subject evacuation. Crown depth was 40-60cm deep and likely failed on the January 30th interface. Very touchy conditions persist in this drainage. One full burial, excavated by other member in party.
- Weather
- Sunny
- Riding quality
- Ok
- Snow conditions
- Heavy
- Avalanche conditions
- Avalanche condition slab
Avalanche report
- Comment
- Toe triggered machine accidental. Large propagation with remainder of slopes showing large cracks.
- Trigger type
- Snowmobile
- Avalanche size
- 2.5
- Trigger sub type
- Accidental
- Start zone aspect
- N
- Vegetation cover
- Open slope
- Start zone incline
- 38
- Avalanche character
- Persistent slab
- Number of avalanches
- 1
- Start zone elevation
- 1750
- Runout zone elevation
- 1650
- Weak layer burial date
- 2025-01-30
- Weak layer crystal type
- Surface hoar and facets
- Start zone elevation band
- Tln
- Avalanche occurrence datetime
- 2025-03-06T21:15:00.000Z
Snowpack report
- Obs type
- Point
- Site aspect
- N
- Site elevation
- 1750
- Site elevation band
- Btl
Weather report
- Avg temp
- 0
- Wind speed
- Wind speed calm
- Sky condition
- Few clouds
- New snow24hours
- 0
- Temperature trend
- Steady
- Precipitation type
- None
Incident report
- Group size
- 2
- Description
- Two people involved. One fully burried approx 1m deep. Second person in group successfully located and extricated the subject. They were flown to town to higher level of care.
- Terrain trap
- Slope transition or bench
- Group activity
- Snowmobiling
- Number involved
- 2
- Number caught only
- 1
- Number fully buried
- 1
- Snow depth trigger point
- Average
- Terrain shape trigger point
- Unsupported