23-24

Weak snow in Tepee creek

Date
Activity
Snowmobiling

Dug into the hillside right before going up the creek. Snow pack was 75 cm deep consisting of three layers. Bottom 35cm is obviously faceted, grain size is around 2mm. Very thin ice crust at around 35cm. Upper 35 cm of snow is brand new snow from this current storm, precipitation particles, low density, with minor wind effect. Performed a quick Compression Test and the ice crust layer failed on the second tap. Sudden collapse, clean sheer. Snowmobiled a small test slope next to pit and got no shooting cracks or whoompfs. 

Region
Southern Gallatin
Location (from list)
Tepee Basin
Observer Name
Seb Gralla

Natural Avalanches in Hyalite

Hyalite - main fork
Northern Gallatin
Code
SS-N-R1-D1-S
Latitude
45.44720
Longitude
-110.96200
Notes

Upon descending climbers saw two recent natural avalanches in the Dribbles Gully. These avalanches were failing within the new snow. 

Number of slides
2
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
1
D size
1
Bed Surface
S - Avalanche released within new snow
Slab Thickness
15.0 centimeters
Vertical Fall
150ft
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

S. Cooke City

Date
Activity
Skiing

From email: 

"South of Cooke City today. Good conditions on low-angle open meadows. Fun problem-solving in the trees!

MC/PC/PS/C, seasonal temp (20s), calm.

No collapses or shooting cracks. Corners broke on steeper kick turns. I had a good view of lower (N) Woody Ridge and did not observe any Avalanche activity. I don't trust this shallow snowpack, but really fun low-angle meadow skipping.

HS 74cm; ECTN14 on new-snow M/F interface, ECTP21 on old-snow depth hoar interface."

Region
Cooke City
Location (from list)
Woody Ridge
Observer Name
Jesse Logan

Beehive- Poor structure and results to match.

Date
Activity
Skiing

Ectp 12 on SW slope around 8800' on new snow/old snow interface. ECTP 9 on SE slope around 9200' on new snow/old snow interface. Shooting cracks  on ENE slope around 9000'. 

Region
Northern Madison
Location (from list)
Middle Basin
Observer Name
Nelson VanTassel