Skier triggered avalanche in N. Madison

Yellow Mountain
Northern Madison
Code
SS-ASu
Elevation
9200
Aspect
NE
Latitude
45.29950
Longitude
-111.32000
Notes

From an email:

9200 ft - NE Aspect CT13-Q2 •Wind-lo loading f le leeward & E facing slopes •10-20 mph winds

My partner and I skied the apex of the ridge to avoid avalanche terrain, he triggered a soft slab , 1.5 ft deep, off the top of the ridge, crown 100ft wide, ran 300 ft down slope. Collapsing observed on the lower tree portions of the exit out Trail Ck.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
Trigger Modifier
u-An unintentional release
Slab Thickness
16.0 inches
Vertical Fall
300ft
Slab Width
100.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year