Cooke City

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

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
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

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
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Many Wind Slab Avalanches Hayden Creek

Date
Activity
Skiing

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. 

Region
Cooke City
Location (from list)
Hayden Creek
Observer Name
Noah Mattes

Dry Loose Snow Avalanche Ghost Couloir

Date
Activity
Skiing

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.

Region
Cooke City
Location (from list)
Sheep Creek
Observer Name
Jake Mundt