20-21

Many (6) natural avalanches near Buck Ridge

Buck Ridge
Northern Madison
Code
SS-N-R2-D2-O
Elevation
9500
Aspect Range
E, NE, SE
Latitude
45.17190
Longitude
-111.38000
Notes

We rode on Buck Ridge on January 8th 2021. We saw six recent natural avalanches and three snowmobile triggered slides. Based on 3-4" of snow that fell yesterday morning covering the debris, we estimate the several natural slides ran 24-48 hours ago. They likely broke on January 6 after the area got 8" of snow on the 5th.

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
Slab Thickness
24.0 inches
Vertical Fall
400ft
Slab Width
40.00ft
Images
Natural avalanches in Bear Creek
Natural Avalanches near McAtee
Avalanche in 3rd YellowMule
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
20-21

Remotely triggered cracking in Bridgers

Texas Meadow
Bridger Range
Code
Latitude
45.84270
Longitude
-110.93700
Notes

From obs: "the whumpf I had heard previously remotely triggered a series of 7-8 large cracks that ranged from 30-100 feet wide. ... As I carefully descended the meadow, I saw many more cracks throughout the slope from the same remote trigger event. Additionally, I triggered two more significant whumpfs with shooting cracks 10-40 feet wide. We determined our remote trigger was at least 300 feet away from where the snow collapsed and cracked"

Number of slides
0
Number caught
0
Number buried
0
Images
Large shooting cracks in Bridgers
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
20-21
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