Cooke City

Small Soft Slab Avalanche near Mount Zimmer Yurt

Date
Activity
Skiing

On 1/12 observed a D .5 soft slab near Long Lake above the snowmobile trail. Also saw some small dry loose activity on E facing terrain in Zimmer Creek. 

Region
Cooke City
Location (from list)
Mt. Zimmer
Observer Name
Beartooth Powder Guides

Persistent Slab Avalanche on Woody Ridge

Woody Ridge
Cooke City
Code
HS-N-R2-D2.5-O
Elevation
9600
Aspect
NW
Latitude
44.99400
Longitude
-109.92200
Notes

From obs. 1/13: "Spotted another natural avalanche today on Woody Ridge north of the "KNBs." Northwest facing slope, crown elevation approx 9600'. Ran 1000 to 1200'. Unsure of when it went, we did not notice it this morning only this afternoon on the hike out."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Natural trigger
R size
2
D size
2.5
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
48.0 inches
Vertical Fall
1100ft
Slab Width
300.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Woody Ridge north of the "KNBs." Northwest facing slope, crown elevation approx 9600'. Ran 1000 to 1200'. Unsure of when it went, we did not notice it this morning only this afternoon on the hike out. Photo: N Gaddy

Cooke City, 2025-01-13

Another Avalanche on Woody Ridge

Date
Activity
Skiing

Spotted another natural avalanche today on Woody Ridge north of the "KNBs." Northwest facing slope, crown elevation approx 9600'. Ran 1000 to 1200'. Unsure of when it went, we did not notice it this morning only this afternoon on the hike out. 

Region
Cooke City
Location (from list)
Woody Ridge
Observer Name
Nick Gaddy

4-6' deep persistent slab avalanche on Woody Ridge

Woody Ridge
Cooke City
Code
HS-N-R3-D3-O
Elevation
10000
Aspect
W
Latitude
44.97010
Longitude
-109.92700
Notes

Observed a large avalanche on a west facing slope approx 10000ft, with a higher crown at 10200'. Crown depth 4-6'. HS-Ns-D2-R2-O . Ran 1000ft and into terrain I had previously considered safe.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Natural trigger
R size
3
D size
3
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
60.0 inches
Vertical Fall
1000ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Observed a large avalanche on a west facing slope approx 10000ft, with a higher crown at 10200'. Crown depth 4-6'. HS-Ns-D2-R2-O . Ran 1000ft and into terrain I had previously considered safe. Photo: N Gaddy

Cooke City, 2025-01-12

Observed a large avalanche on a west facing slope approx 10000ft, with a higher crown at 10200'. Crown depth 4-6'. HS-Ns-D2-R2-O . Ran 1000ft and into terrain I had previously considered safe. Photo: N Gaddy

Cooke City, 2025-01-12