23-24

Small Snowmobiler Triggered Avalanche, Cooke City

Scotch Bonnet
Cooke City
Code
AM
Latitude
45.07330
Longitude
-109.94800
Notes

A rider triggered a small avalanche on a steep rollover. This avalanche was below a much bigger avalanche the was triggered on 02/16/2024. 

Number of slides
1
Number caught
0
Number buried
0
Trigger
Snowmobile
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Large Natural Avalanche near Republic Creek

Republic Creek
Cooke City
Code
Aspect
E
Latitude
44.97480
Longitude
-109.96500
Notes

From obs on 02/17/2024: "From woody ridge, we observed a large avalanche across the republic creek drainage (not sure what the peak is called but see the coordinates). I heard it first since it sounded like thunder or a plane, and then saw a huge cloud of snow moving down the mountain across the drainage.  We do not know if it was natural or triggered by someone.

We also observed large collapsing and whumpfing at the top of woody ridge on wind loaded slopes. Nothing moved as it was less than 30 degrees. "

 

Number of slides
1
Number caught
0
Number buried
0
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

From ob on 02/17/2024: "From woody ridge, we observed a large avalanche across the republic creek drainage (not sure what the peak is called but see the coordinates). I heard it first since it sounded like thunder or a plane, and then saw a huge cloud of snow moving down the mountain across the drainage.  We do not know if it was natural or triggered by someone." Photo: B. Huyard

 

 

Cooke City, 2024-02-18

Natural avalanche south of Flanders

Flanders Creek
Northern Gallatin
Code
Aspect
NE
Latitude
45.43210
Longitude
-110.94200
Notes

From obs on 02/18/2024: "Toured up to Flanders today. Variable snow but stable conditions on the main route to the SE Bowl. Large natural avalanche on the NE face south of Flanders."

Number of slides
1
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Whumpfing Beehive Basin

Beehive Basin
Northern Madison
Code
Latitude
45.34070
Longitude
-111.39100
Notes

From obs: "Widespread stubborn collapsing, often triggered by 3 or 4 person on the slope" 

Several very small natural loose snow avalanches were also observed. 

Number of slides
0
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year

Natural Avalanche near Cooke City

COOKE CITY
Cooke City
Code
N
Elevation
9000
Aspect
NW
Latitude
45.02020
Longitude
-109.93800
Notes

From email on 02/18/2024: "Photo natural avalanche on a NW aspect at 9000', taken north of Cooke City today. It likely happened right around Feb. 15th.

Number of slides
1
Number caught
0
Number buried
0
Trigger
Natural trigger
Problem Type
Persistent Weak Layer
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year