21-22

From email 3/3/22: "From Woody Ridge today I observed 3 fresh natural slab avalanches that all occurred on the other side of the valley around 11am.  These slab avalanches were 1-2' deep and up to around 100' wide.  Attached photo of one, on an east aspect of a place known locally as Hunter's Knob." Photo: B. Fredlund

Avalanche Details: Natural avalanches in Cooke City
Forecast link: GNFAC Avalanche Forecast for Fri Mar 4, 2022GNFAC Avalanche Forecast for Sat Mar 5, 2022GNFAC Avalanche Forecast for Sun Mar 6, 2022GNFAC Avalanche Forecast for Mon Mar 7, 2022
Cooke City, 2022-03-04
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    • Wet Loose on Silken Falls

    Date
    Activity
    Ice Climbing

    Witnessed a small (R1-D2) naturally released wet loose slide above Silken Falls (8000’, W) at approximately 1:15pm on 3/3/21. Video below. 
     

    Upon returning to the Grotto Falls Lot (6900’) at ~3pm we witnessed two more small but powerful naturally triggered wet loose slides near Black Magic (E aspect) and to looker’s right. 

    Region
    Northern Gallatin
    Location (from list)
    Hyalite - main fork
    Observer Name
    Sharon Birchfield

    Bacon Rind 3/3

    Date
    Activity
    Skiing

    Skied bacon rind today. Conditions started out variable and quickly transitioned to wet. MF crust this morning below 8k, though the snow seemed to have stayed dry above that. HS on the ridge ~115. By 12pm on the ridge, the top 10cm was wet (in most places this was a now wet wind slab). Dry, F- near-surface facets underlying. 
     

    Isothermal mank on the way down below 8k. HS 50 +-30cm. 

    Saw lots of wet loose activity on road cuts driving home. Good thing it's supposed to cool down tonight..... yikes! 

    Region
    Southern Madison
    Location (from list)
    Bacon Rind
    Observer Name
    Hannah Marshall

    Wet Loose avalanches in Lionhead, Hyalite, Cooke

    Lionhead Ridge
    Lionhead Range
    Code
    WL-N-R1-D1
    Latitude
    44.71450
    Longitude
    -111.31800
    Notes

    Numerous small wet loose avalanches were seen in the Lionhead area on 2/3/22. These slides generally started below rocks and did not entrain much snow. 

    Wet loose avalanches were also reported in Hyalite and near Cooke City.

    Number caught
    0
    Number buried
    0
    Avalanche Type
    Wet loose-snow avalanche
    Trigger
    Natural trigger
    R size
    1
    D size
    1
    Images
    Loose wet avalanches at Lionhead
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    21-22

    Wind Slab on Lionhead Ridge

    Lionhead Ridge
    Lionhead Range
    Code
    SS-N-R1-D2
    Latitude
    44.71450
    Longitude
    -111.31800
    Notes

    Wind slab avalanche on Lionhead Ridge. Approximately 50 ft wide and ran 200 vertical feet. Looks to have gouged down into lower layers below the rocks. Photo taken the morning of 3/2/22 and the slide looked fresh.

    Number of slides
    1
    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    1
    D size
    2
    Images
    Wind slab avalanche on Lionhead Ridge
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Single Avalanche
    Advisory Year
    21-22
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