23-24

Recent Natural Avalanche near Cooke

Date
Activity
Skiing

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

Region
Cooke City
Location (from list)
COOKE CITY
Observer Name
Beau Fredlund

Whumpfs in Pebble Creek

Date
Activity
Skiing

Went touring up Pebble Creek today and got multiple whumpfs/large collapses when stepping off the skin track.

Region
Cooke City
Location (from list)
Pebble Creek - YNP
Observer Name
Florence Miller

Remote triggered (or natural) south of Cedar

Buck Ridge
Northern Madison
Code
HS-AMr-R3-D2-O
Elevation
9200
Aspect
E
Latitude
45.17190
Longitude
-111.38000
Notes

On 2/18/24 We saw a fresh avalanche that we either triggered from 750-800 feet away or it broke naturally. This avalanche happened when we were riding near the larger of the two avalanches from yesterday, on the south side of Cedar Mtn. When we regrouped at the base of the recent avalanche I was scanning all the nearby slopes and did not see any fresh avalanches, and noted a huge cornice on a low convex slope. We then rode up and parked near the top of yesterday's slide, and Doug noticed a fresh slide on the slope I had just been starring at. It was a wind-loaded slope, actively loading. The avalanche was ~130' wide with 100' of 4-12" deep new snow/wind slab, and 30' wide broke almost 3 feet deep on weak snow near the ground.

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Snowmobile
Trigger Modifier
r-A remote avalanche released by the indicated trigger
R size
3
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
20.0 inches
Vertical Fall
100ft
Slab Width
130.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Natural avalanches around Buck Ridge

Buck Ridge
Northern Madison
Code
HS-N-R2-D2-O
Elevation
9300
Aspect
NE
Latitude
45.17190
Longitude
-111.38000
Notes

On 2/18/24 we rode out Buck Ridge to Muddy Creek and towards Cedar Mtn.. In addition to three previously reported avalanches, we saw at least eight recent avalanches that were not previously reported and appeared to have occurred at various times over the last 1-3 days, natural and/or remote triggered by riders. A group in the parking lot mentioned seeing many slides actively happen in this area on Friday 2/16, We saw at least six recent slides in Muddy Creek, two in McAtee Basin, and one in Second Yellow Mule. Most were 2-3' deep hard slabs, ranging from 50'-500' wide.

Number of slides
4
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
24.0 inches
Vertical Fall
120ft
Slab Width
150.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Remote triggered slides in Muddy Creek

Buck Ridge
Northern Madison
Code
HS-AMr-R3-D2.5-O
Elevation
9300
Aspect
N
Latitude
45.17190
Longitude
-111.38000
Notes

On 2/18/24 we rode out Buck Ridge to Muddy Creek and towards Cedar Mtn.. In addition to three previously reported avalanches, we saw at least eight recent avalanches that were not previously reported and appeared to have occurred at various times over the last 1-3 days, natural and/or remote triggered by riders. A group in the parking lot mentioned seeing many slides actively happen in this area on Friday 2/16, We saw at least six recent slides in Muddy Creek, two in McAtee Basin, and one in Second Yellow Mule. Most were 2-3' deep hard slabs, ranging from 50'-500' wide.

Number of slides
5
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Snowmobile
Trigger Modifier
r-A remote avalanche released by the indicated trigger
R size
3
D size
2.5
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
24.0 inches
Vertical Fall
150ft
Slab Width
200.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

On 2/18/24 near Buck Ridge and Muddy Creek we saw at least eight recent avalanches that occurred at various times over the last 1-3 days, natural and/or remote triggered by riders. A group in the parking lot mentioned seeing many slides actively happen in this area on Friday 2/16. Most were 2-3' deep hard slabs, ranging from 50'-500' wide. Photo: GNFAC

Northern Madison, 2024-02-18

On 2/18/24 near Buck Ridge and Muddy Creek we saw at least eight recent avalanches that occurred at various times over the last 1-3 days, natural and/or remote triggered by riders. A group in the parking lot mentioned seeing many slides actively happen in this area on Friday 2/16. Most were 2-3' deep hard slabs, ranging from 50'-500' wide. Photo: GNFAC

Northern Madison, 2024-02-18

On 2/18/24 near Buck Ridge and Muddy Creek we saw at least eight recent avalanches that occurred at various times over the last 1-3 days, natural and/or remote triggered by riders. A group in the parking lot mentioned seeing many slides actively happen in this area on Friday 2/16. Most were 2-3' deep hard slabs, ranging from 50'-500' wide. Photo: GNFAC

Northern Madison, 2024-02-18