Southern Gallatin

Natural Avalanches Red Mountain

Red Mountain
Southern Madison
Code
HS-N-R2-D2
Latitude
44.94740
Longitude
-111.15600
Notes

Several natural avalanches were observed on Red Mountain. These avalanches were seen on 1/13/22, but likely occurred around 1/8/22. 

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

Skier triggered cornice beehive basin

Beehive Basin
Northern Madison
Code
SS-NCu-R3-D2-O
Elevation
9300
Aspect
E
Latitude
45.33790
Longitude
-111.39900
Notes

From email 1/9/21: "Skier triggered cornice failure avalanche. Broke at skis 10-12 feet from the lip. No one caught or injured."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Cornice fall
Trigger Modifier
u-An unintentional release
R size
3
D size
2
Bed Surface
O - Old snow
Problem Type
Wind-Drifted Snow
Images
Skier triggered cornice debris 2, beehive basin
Skier triggered cornice debris, beehive basin
Skier triggered cornice West ridge beehive basin 2
Skier triggered cornice/avalanche West ridge beehive basin
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
21-22

Avalanche near Lionhead Peak

Lionhead Ridge
Lionhead Range
Code
SS-N-R3-D2-O
Elevation
9000
Aspect
NE
Latitude
44.73280
Longitude
-111.33200
Notes

This avalanche broke wide in a northerly facing bowl off Lionhead Ridge. It looks to have broken a foot or less deep. The propogation indicates a uniform weak layer, likely near-surface facets or surface hoar.

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
Images
Recent Avalanche in Lionhead
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
21-22

A sled was recovered uphill of the 2 avalanche victims in the same area it was stuck. The sled was found with a probe line and is buried 3-4 feet deep. The avalanche crown can be seen in the upper slopes above them. Photo: GNFAC

Avalanche Details: Double Avalanche Fatality, Scotch Bonnet Mountain
Forecast link: GNFAC Avalanche Forecast for Wed Dec 29, 2021GNFAC Avalanche Forecast for Thu Dec 30, 2021
Cooke City, 2021-12-28
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