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.”

Avalanche Details: Skier triggered avalanche in Banana couloir
Forecast link: GNFAC Avalanche Forecast for Mon Apr 8, 2024GNFAC Avalanche Forecast for Wed Apr 10, 2024
Bridger Range, 2024-04-08
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    • 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
    Images
    Skier Triggered Avalanche Northern Bridgers, debris
    Skier Triggered Avalanche Northern Bridgers, crown
    Snow Observation Source
    New snow avalanche Northern Bridgers
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Single Avalanche
    Advisory Year
    23-24

    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

    Avalanche Details: Skier Triggered Storm Snow Avalanche, N. Bridgers
    Bridger Range, 2024-04-07
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    • 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

    Avalanche Details: Skier Triggered Storm Snow Avalanche, N. Bridgers
    Forecast link: GNFAC Avalanche Forecast for Mon Apr 8, 2024
    Bridger Range, 2024-04-07
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    • 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
    Images
    Skier triggered slab debris, Wolverrine
    Skier triggered slab, Wolverine
    Skier triggered avalanche Wolverine, lookers left crown
    Skier triggered storm slabs in steep terrain
    Skier Triggered Storm Slab above skin track
    Attached Videos
    New snow avalanches, Bridger Range - 7 Apr 2024
    Snow Observation Source
    New Snow Avalanches in the Bridgers
    Slab Thickness units
    inches
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    23-24

    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

    Avalanche Details: New Snow Avalanches in the Bridgers
    Forecast link: GNFAC Avalanche Forecast for Mon Apr 8, 2024GNFAC Avalanche Forecast for Tue Apr 9, 2024
    Bridger Range, 2024-04-07
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