Northern Madison

Wet loose avalanches in Beehive and Bear Basins

Date
Activity
Skiing

We saw several loose avalanches on WSW, ESE & SSE aspects of the ridge between beehive and bear basin.  The one on the ESE slope may have been skier triggered (by another group) and the rest appeared to be natural.  We found a strong crust beneath the foot of new snow throughout our route.  We didn't see any cracks or whumphs, and the new snow wasn't reactive in hand pits.  The snow surface was getting wet as we exited to the beehive trailhead around 3pm.

Region
Northern Madison
Location (from list)
Beehive Basin

Remote trigger in little bear

Date
Activity
Snowmobiling

From IG message 4/17/24: "Remote trigger up little bear today. Went to the groundish."

Region
Northern Gallatin
Location (from list)
NORTHERN GALLATIN RANGE
Observer Name
Loren Griswold

A group remotely triggered a wet slab avalanche from the ridge top. There were shooting cracks that connected their location to the avalanche. This is an interesting of persistent weak layer and wet snow avalanche problems. Photo: M Harry 

Northern Madison, 2024-04-15

Remotely triggered wet slab Taylor Fork

Date
Activity
Snowmobiling

From IG: A group of riders noted very wet snow west of Cabin Creek and Southwest of the Taylor Fork. They were sinking to the ground where it was unconsolidated. The group remotely triggered a wet slab avalanche from the ridge top. There were shooting cracks that connected their location to the avalanche. This is an interesting of persistent weak layer and wet snow avalanche problems. 

Region
Southern Madison
Location (from list)
Taylor Fork
Observer Name
Marcus Harry

Wet Slab Avalanche Above Quake Lake

Quake Lake
Southern Madison
Code
WS-N-R2-D2-G
Latitude
44.85240
Longitude
-111.39200
Notes

From IG: Wet slide to the ground above Quake Lake. 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Wet slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
G - Ground
Problem Type
Wet Snow
Vertical Fall
300ft
Slab Width
150.00ft
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Cornice Collapse on the Sphinx

Sphinx Mountain
Southern Madison
Code
C-ASu
Latitude
45.15820
Longitude
-111.47700
Notes

From obs: " Unintentionally triggered a large cornice collapse on the south face of the Sphinx. " 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Cornice fall
Trigger
Skier
Trigger Modifier
u-An unintentional release
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year