Large Natural Avalanche on Hyalite Peak

Hyalite Peak
Northern Gallatin
Code
HS-N-R2-D2-G
Elevation
10298
Aspect
N
Latitude
45.38100
Longitude
-110.96100
Notes

Toured into divide basin on Friday. Looking at the north face of hyalite peak we saw a slide that went to the ground, and was about 150 feet wide. It possible this slide propagated further, but severe wind loading was actively occurring and it was hard to tell if the crown had been filled back in. We dug a pit at 9300 feet on a SÉ aspect and found a 80-100 cm HS and right side up snow pack with minor faceting below a crust 30 cm from the bottom. 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
G - Ground
Problem Type
Wind-Drifted Snow
Vertical Fall
500ft
Slab Width
200.00ft
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year