24-25

Visable layer distinction about 8-12” deep

Date
Activity
Skiing

After taking a heavy landing on top of a pillow just off the highway past lolo pass road, I looked back up and could visibly see some layer distinction about 8-12” deep. This is the same weakish layer we found in our column test, where we got ect16 just below robs knob. This was on a north facing aspect.

Region
Cooke City
Observer Name
Ian Tuttle

Snowmobile triggered avalanche Buck Ridge

Buck Ridge
Northern Madison
Code
SS-AMu-R2-D2-S
Latitude
45.17190
Longitude
-111.38000
Notes

Buck ridge, snowmobile triggered avalanche. Propagated storm slab.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
Trigger Modifier
u-An unintentional release
R size
2
D size
2
Bed Surface
S - Avalanche released within new snow
Problem Type
Storm Slab
Images
Snowmobile triggered avalanche Buck Ridge
Snow Observation Source
Snowmobile triggered avalanche Buck Ridge
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
24-25

Snowmobile triggered avalanche Buck Ridge

Date
Activity
Snowmobiling

From IG message: “Buck ridge, snowmobile triggered avalanche. Propagated storm slab.”

Region
Northern Madison
Location (from list)
Buck Ridge
Observer Name
Clay Erhard

Dry Loose Snow Avalanche Ghost Couloir

Sheep Creek
Cooke City
Code
L-N-R1-D1-S
Latitude
45.03440
Longitude
-109.98400
Notes

Today we saw a D1 dry loose in the Ghost Couloir. It ran 200 feet. We also felt one small collapse on a south facing slope. No other avalanches observed.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
1
Bed Surface
S - Avalanche released within new snow
Problem Type
Loose Dry
Vertical Fall
200ft
Snow Observation Source
Dry Loose Snow Avalanche Ghost Couloir
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
24-25

Many Wind Slab Avalanches Hayden Creek

Hayden Creek
Cooke City
Code
SS-N-R2-D2-I
Elevation
9800
Aspect
E
Latitude
44.99520
Longitude
-109.90800
Notes

In Hayden Creek, we saw many D1-D1.5 wind slab avalanches seen on leeward slopes- east and northeast slopes at and above treeline. We observed cracking in wind loaded areas above treeline. Dug a pit and did a quick ECT on E facing terrain at 9750ft. HS 190-210. ECTN6 30cm deep. No dirt layer. 

Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
I - Interface between new and old snow
Problem Type
Wind Slab
Slab Thickness
12.0 inches
Vertical Fall
400ft
Slab Width
150.00ft
Images
Wind Slab Avalanches Hayden Creek 2
Wind Slab Avalanche Hayden Creek
Many Loose Snow and Wind Slab Avalanches Hayden Creek
Wind Slab Avalanche Near Submarine
Snow Observation Source
Many Wind Slab Avalanches Hayden Creek
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
24-25
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