Northern Gallatin

Avalanche near Solstice, Hyalite

Hyalite - main fork
Northern Gallatin
Code
Latitude
45.43240
Longitude
-110.97500
Notes

Climbers in Hyalite saw an avalanche near Solstice that happened on 01/21. This avalanche is 1' deep at the crown and with 18" of facets snow below. 

Number of slides
1
Number caught
0
Number buried
0
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Remotely Triggered Avalanche Below Hyalite Peak

Hyalite Peak
Northern Gallatin
Code
SS-ASr-R1-D2-O
Aspect
E
Latitude
45.38710
Longitude
-110.96100
Notes

An avalanche was triggered by skiers crossing a slope 400' below the crown. 

From obs: "My partner and I remotely triggered a persistent slide on an East facing slope at 9350ft. The slide ran off the Evil Twin ridge, just below the large main summer trail bowl of Hyalite Peak. My partner and I were spaced out ~50ft when we both felt and heard a large whumpf. We looked up and saw the avalanche slide, but were both out of harms way from the path. The starting zone was ~400ft above us and the slide ran ~500ft in total length. The crown was just over 2ft deep at its max and 150ft+ wide. The were signs of recent wind loading as we approached the bowl prior to the slide." 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
Trigger Modifier
r-A remote avalanche released by the indicated trigger
R size
1
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
18.3 inches
Slab Width
150.00ft
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Skiers triggered an avalanche on an east-facing slope at 9350ft.

From obs: "The crown was just over 2ft deep at its max and 150ft+ wide. The were signs of recent wind loading as we approached the bowl prior to the slide. We did not observe any other avalanches while we were out." Photo: T. Hoefler

Northern Gallatin, 2024-01-21