23-24

From IG message: “Rode the banana today.. lots of fast moving sluff. Had a mid elevation pocket pop. New snow seemed to have bonded well, the spot that did pop had formed into 12” slab below rock face.”

Bridger Range, 2024-04-08

Skier triggered avalanche in Banana couloir

Date
Activity
Skiing

From IG message: “Rode the banana today.. lots of fast moving sluff. Had a mid elevation pocket pop. New snow seemed to have bonded well, the spot that did pop had formed into 12” slab below rock face. Little to no signs of instability.”

Region
Bridger Range
Location (from list)
Ross Peak

Skier Triggered Storm Snow Avalanche, N. Bridgers

Flathead Pass
Bridger Range
Code
SS-ASu-R2-D2
Elevation
8200
Aspect
N
Latitude
45.94830
Longitude
-110.99000
Notes

From obs : "After skiing two laps on East facing terrain two basins north of Anger Lake basin and seeing no significant signs of instability, we descended into a north facing gully around 8,200ft and triggered an avalanche on the new snow/old crust interface. The crown was 4-18 inches deep and propagated the entire width of the gully ~40 feet and ran the entire length of the gully ~500 vertical feet. I was able to ski out of the avalanche right as it broke and was not carried. "

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
Trigger Modifier
u-An unintentional release
R size
2
D size
2
Problem Type
New Snow
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Skiers triggered this avalanche on a north-facing slope near the Anger Lake basin.  The crown was 4-18 inches deep and propagated the entire width of the gully ~40 feet and ran the entire length of the gully ~500 vertical feet. The skier was able to ski out of the avalanche right as it broke and was not carried. Photo: Anonymous

Bridger Range, 2024-04-07

Skiers triggered this avalanche on a north-facing slope near the Anger Lake basin.  The crown was 4-18 inches deep and propagated the entire width of the gully ~40 feet and ran the entire length of the gully ~500 vertical feet. The skier was able to ski out of the avalanche right as it broke and was not carried. Photo: Anonymous

Bridger Range, 2024-04-07

New snow avalanche Northern Bridgers

Date
Activity
Skiing

After skiing two laps on East facing terrain two basins north of Anger Lake basin and seeing no significant signs of instability, we descended into a north facing gully around 8,200ft and triggered an avalanche on the new snow/old crust interface. The crown was 4-18 inches deep and propagated the entire width of the gully ~40 feet and ran the entire length of the gully ~500 vertical feet. I was able to ski out of the avalanche right as it broke and was not carried. 

Region
Bridger Range
Location (from list)
Flathead Pass

New Snow Avalanches in the Bridgers

The Ramp
Bridger Range
Code
SS-AS-R2-D2-S
Elevation
8300
Aspect Range
N-NE
Latitude
45.82880
Longitude
-110.93100
Notes

While skiing near the ramp we saw several skier-triggered storm slabs and loose snow avalanches. Most were R2/D1.5. The largest of these happened south of the Wolverine Cirque below a cliff band, R2/D2. 

Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
R size
2
D size
2
Bed Surface
S - Avalanche released within new snow
Problem Type
Storm Slab
Slab Thickness
12.0 inches
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

The largest skier-triggered avalanche that we saw today. The crown extended out of frame below steep rocks. This avalanche broke ~1' deep within the recent storm snow. R2/D2. Photo: GNFAC

Bridger Range, 2024-04-07