24-25

History Rock Test Scores

Date
Activity
Skiing

Skied the third meadow and dug a pit this morning. Calm winds with no evidence of previous winds around 8500'. S1 in the morning which ceased as skies began to clear midday. No signs of instability were observed.

Our pit provided several ECT results on multiple interfaces, which we were curious about after this previous storm cycle but were surprised by the lack of propagation/quality in our results.

Region
Northern Gallatin
Location (from list)
History Rock
Observer Name
E. Webb

Woody Ridge north of the "KNBs." Northwest facing slope, crown elevation approx 9600'. Ran 1000 to 1200'. Unsure of when it went, we did not notice it this morning only this afternoon on the hike out. Photo: N Gaddy

Avalanche Details: Persistent Slab Avalanche on Woody Ridge
Forecast link: GNFAC Avalanche Forecast for Tue Jan 14, 2025GNFAC Avalanche Forecast for Wed Jan 15, 2025
Cooke City, 2025-01-13
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    • Whumpfing, Cracking and Avalanches at Bacon Rind

    Bacon Rind
    Southern Madison
    Code
    SS-N-R3-D2-O
    Elevation
    8800
    Aspect
    N
    Latitude
    44.96090
    Longitude
    -111.10000
    Notes

    We saw a large avalanche (SS-N-R3-D2-O) that broke on a north facing aspect, around 2' deep, on weak snow near the ground. It was not clear whether it was one large avalanche or two that released sympathetically with one another. If one slide, this avalanche broke nearly 900' wide and slid around 1000' vertical. It broke during the most recent period of intense loading in this area, likely January 5th or 6th. 

    Number of slides
    1
    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    3
    D size
    2
    Bed Surface
    O - Old snow
    Problem Type
    Persistent Weak Layer
    Slab Thickness
    24.0 inches
    Vertical Fall
    1000ft
    Slab Width
    900.00ft
    Images
    (2) Crown of a R3-D2 avalanche on a north aspect near Bacon Rind
    (1) Crown of a R3-D2 avalanche on a north aspect near Bacon Rind
    Snow Observation Source
    Whumpfing, Cracking and Avalanches at Bacon Rind
    Slab Thickness units
    inches
    Single / Multiple / Red Flag
    Single Avalanche
    Advisory Year
    24-25

    Another Avalanche on Woody Ridge

    Date
    Activity
    Skiing

    Spotted another natural avalanche today on Woody Ridge north of the "KNBs." Northwest facing slope, crown elevation approx 9600'. Ran 1000 to 1200'. Unsure of when it went, we did not notice it this morning only this afternoon on the hike out. 

    Region
    Cooke City
    Location (from list)
    Woody Ridge
    Observer Name
    Nick Gaddy
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