Large Remote Trigger Avalanche West Aspect
Observed Mar 3, 2024, 12:30 p.m. PST · Purcells
This report was submitted with an older form.
Quick report
- Ride type
- Dense trees
- Stayed away
- Alpine slopes, Convex slopes, Steep slopes
- Riding quality
- Good
- Snow conditions
- Powder
- Avalanche conditions
- Avalanche condition slab, Avalanche condition snow
Avalanche report
- Comment
- Group of Snowmobilers was riding further up valley and remote triggered a lower slope in the valley, which triggered a high center slope. As the avalanche ran out it stepped up and over to adjacent slopes. 80% of the face slid. some area to ground/rock, most triggered and ran on February crust. Group of riders were able to evacuate the area as the slide occurred, no burials and all members accounted for when the group was reached. Talking with other riders that day a similar occurrence happened 2 valleys south. At 1:30PM it was approximately - 13 in the Alpine and the face was receiving some Solar input from partially cloudy skys.
- Run length
- 600
- Slab width
- 1500
- Trigger type
- Snowmobile
- Wind exposure
- Cross loaded slope
- Avalanche size
- 3.5
- Trigger sub type
- Remote
- Start zone aspect
- W
- Trigger distance
- 300
- Vegetation cover
- Open slope
- Start zone incline
- 36
- Avalanche character
- Persistent slab
- Crust near weak layer
- Yes
- Number of avalanches
- 1
- Runout zone elevation
- 2100
- Weak layer burial date
- 2024-02-10
- Avalanche observation
- 12to24hrsAgo
- Weak layer crystal type
- Storm snow, Surface hoar
- Start zone elevation band
- Tln
- Avalanche occurrence datetime
- 2024-03-03T20:30:00.000Z
Weather report
- Avg temp
- -13
- Max temp
- -9
- Min temp
- -20
- Wind speed
- Wind speed calm
- Blowing snow
- None
- Sky condition
- Broken clouds
- New snow24hours
- 20
- Storm start date
- 2024-02-27
- Storm snow amount
- 90
- Temperature trend
- Rising
- Precipitation type
- None
- Precipitation24hours
- 20
Incident report
- Group size
- 10
- Terrain trap
- Gully depression, Slope transition or bench, Trees
- Group activity
- Snowmobiling
- Number involved
- 0
- Number caught only
- 0
- Number fully buried
- 0
- Snow depth trigger point
- Deep
- Terrain shape trigger point
- Planar
- Number partly buried impaired breathing
- 0