24-25
There was a natural avalanche on the landslide face above quake lake. The avalanche failed on a weak layers near the ground and broke several hundred feet wide.
Natural Avalanche on 1st Yellowmule
Buck Ridge
Northern Madison
Code
SS-N-R1-D1.5
Aspect Range
N-NE
Latitude
45.17200
Longitude
-111.38500
Notes
The wind had definitely been moving things around, signs of decent loading and some avy activity today, kind of where I thought we’d find some action. See attached photos. Noticed a small 8-10” wind slab pocket on the way in, looked like storm load but could have been sled triggered from the top. Found a bigger pocket that had pulled out on steeper terrain in the 1st Yellow Mule no tracks around since we were the first in there. Both were N to NE facing which we had flagged for ourselves due to the wind direction during a post storm. We were suspect of the east side of the compass from north to south.
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
1
D size
1.5
Problem Type
Persistent Weak Layer
Slab Thickness
30.0 inches
Vertical Fall
100ft
Slab Width
75.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
Found a bigger pocket that had pulled out on steeper terrain in the 1st Yellow Mule no tracks around since we were the first in there. Photo: Anonymous
Avalanche Details: Natural Avalanche on 1st Yellowmule
Northern Madison, 2025-01-01
Found a bigger pocket that had pulled out on steeper terrain in the 1st Yellow Mule no tracks around since we were the first in there. Photo: Anonymous
Avalanche Details: Natural Avalanche on 1st Yellowmule
Forecast link: GNFAC Avalanche Forecast for Wed Jan 1, 2025
Northern Madison, 2025-01-01
Forecast link: GNFAC Avalanche Forecast for Wed Jan 1, 2025
Noticed a small 8-10” wind slab pocket on the way in, looked like storm load but could have been sled triggered from the top. Photo: Anonymous
Noticed a small 8-10” wind slab pocket on the way in, looked like storm load but could have been sled triggered from the top. Photo: Anonymous
Small avalanche in Buck
Buck Ridge
Northern Madison
Code
SS-N-D1
Aspect
NE
Latitude
45.16470
Longitude
-111.36400
Notes
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
D size
1
Problem Type
Wind-Drifted Snow
Vertical Fall
20ft
Slab Width
5.00ft
Images
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Small avalanche NE aspect near top of beaver. D1 natural trigger wind slab. Only observed avalanche from groomer trail. Photo: Z Bailey
Avalanche Details: Small avalanche in Buck
Northern Madison, 2025-01-01