20-21

From obs: "Skiers traveling on South facing slope at 9,100ft elevation ascending Miller Trees remote triggered from skin track (second lap) a wind slab on a steeper East facing slope that slid to gully floor and out to Sheep Creek. Westerly wind was blowing with gusts carrying snow to load the east-facing side of the gully. Crown was approximately 4ft at the crest of the gully’s slope. Cracking visible in the photo from skin track traveled up to crown 50yrds away.

Avalanche Details: Sheep Creek - Gully east of Miller Trees
Forecast link: GNFAC Avalanche Forecast for Tue Feb 9, 2021
Cooke City, 2021-02-08
Access other image sizes:
  • Very Large 1200px
  • Large 480px
  • Medium 220px
  • Small 150px
  • Original

    • Remote Trigger Outside of YC

    Yellowstone Club
    Northern Madison
    Code
    ASu-R3-D2-O
    Elevation
    8000
    Aspect
    NE
    Latitude
    45.23110
    Longitude
    -111.44100
    Notes

    This avalanche was triggered from across the boundary line of the YC. 

    Number of slides
    1
    Number caught
    0
    Number buried
    0
    Trigger
    Skier
    Trigger Modifier
    u-An unintentional release
    R size
    3
    D size
    2
    Bed Surface
    O - Old snow
    Problem Type
    Persistent Weak Layer
    Slab Thickness
    36.0 inches
    Vertical Fall
    200ft
    Slab Width
    150.00ft
    Images
    Remote Trigger Out of Boundary YC
    Slab Thickness units
    inches
    Single / Multiple / Red Flag
    Single Avalanche
    Advisory Year
    20-21

    Dudley Creek

    Dudley Creek
    Northern Madison
    Code
    SS-N-R2-D2-O
    Elevation
    8500
    Aspect
    N
    Latitude
    45.31450
    Longitude
    -111.29500
    Notes

    Skiers in Dudley Creek saw recent avalanche in the north facing glades 

    Number of slides
    6
    Number caught
    0
    Number buried
    0
    Avalanche Type
    Soft slab avalanche
    Trigger
    Natural trigger
    R size
    2
    D size
    2
    Bed Surface
    O - Old snow
    Problem Type
    Persistent Weak Layer
    Images
    Dudley Creek 1
    Dudley Creek
    Slab Thickness units
    centimeters
    Single / Multiple / Red Flag
    Multiple Avalanches
    Advisory Year
    20-21
    Subscribe to 20-21