23-24
Poor stability in Cooke City
Date
Activity
Skiing
Snowmobiling
We rode up Daisy Pass road and dug below the road at 9,510' on a WSW aspect. Snowpack was 2.5feet deep (87cm). The recent snow was 1 foot =1.6" SWE (measured in field), sitting on a hard crust above 2mm facets which made up the bottom half of the snowpack. We got an ECTP11. We dug a second pit near Lulu Pass on a NE facing slope at 9,520', and found a very similar snowpack structure, without the crust below the recent snow, and also got ECTP11 as well as some ECTNs.
We saw a couple 8-10" deep natural avalanches on the steep slopes above Miller Creek that probably ran in the last 24-48hours. We had multiple collapses on the NE facing slope where we ski toured to dig our second pit.
Region
Cooke City
Location (from list)
Henderson Mountain
Observer Name
Alex Marienthal
Natural Avalanche North of Cooke City
Henderson Mountain
Cooke City
Code
SS-N-R2-D1.5
Latitude
45.05240
Longitude
-109.94500
Notes
From GNFAC: We rode up Daisy Pass road... saw a couple 8-10" deep natural avalanches on the steep slopes above Miller Creek that probably ran in the last 24-48hours. We had multiple collapses on the NE facing slope where we ski toured to dig our second pit.
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
2
D size
1.5
Slab Thickness
10.0 inches
Vertical Fall
100ft
Slab Width
100.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Constant red flags on W Henderson.
Avalanche Details: Natural Avalanche North of Cooke City
Cooke City, 2023-12-05
Cracking, Collapsing, Whumpfing
Date
Activity
Skiing
Constant red flags on W Henderson.
Region
Cooke City
Location (from list)
Henderson Mountain
Lotta slides in black canyon island park.
Centennials - Idaho
Island Park
Code
Latitude
44.51680
Longitude
-111.63000
Notes
User comment on FB: "Lotta slides in black canyon island park."
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
Shooting Cracks Black Canyon, Island Park
Centennials - Idaho
Island Park
Code
Latitude
44.51680
Longitude
-111.63000
Notes
From FB Comment: "We were seeing shooting cracks in the snow Sunday in the Black Canyon area."
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
Shooting Cracks Black Canyon, Island Park
Date
Activity
Snowmobiling
From FB Comment: "We were seeing shooting cracks in the snow Sunday in the Black Canyon area."
Region
Island Park
Location (from list)
Centennials - Idaho
Observer Name
Ryli Schlueter