Sky pilot instabilities

Observed Dec 11, 2022, 3:00 p.m. PST · Southwest Coast

This report was submitted with an older form.

Quick report

Comment
No whumpfing or settling seen as we skied/skinne.
Weather
Cold
Ride type
Mellow slopes, Alpine slopes, Dense trees
Stayed away
Convex slopes
Riding quality
Good
Snow conditions
Deep powder
Avalanche conditions
Avalanche condition snow

Avalanche report

Comment
Our group remotely triggered a small slab avalanche which started on on steep terrain with a thin snowpack on the sides of the gulley we skied. It wasn't obvious what exactly triggered the avalanche as we skied the main gulley below the steep start zone of the avalanche but could see our tracks near the bottom so assume it was a remote trigger, in fact we didnt notice the avalanche until after we had finished skiing (as it didnt trigger immediately when we were skiing but our tracks were the only ones near it). We spotted another skier (shown in orange) who skied above the avalanche area (unsure if he'd seen it) before cutting skiers left, but we then saw he had triggered a huge (5+ meter) shooting crack above him on the steep slope he skied (same slope as the avalanche).
Run length
50
Slab width
9
Trigger type
Skier
Wind exposure
Lee slope
Avalanche size
1
Slab thickness
50
Trigger sub type
Remote
Start zone aspect
NW
Trigger distance
20
Vegetation cover
Open slope
Avalanche character
Wind slab
Number of avalanches
1
Start zone elevation
1500
Avalanche observation
12hrsAgo
Start zone elevation band
Alp
Avalanche occurrence datetime
2022-12-11T22:30:00.000Z