23-24
Snowmobiler triggered Avalanches (2) near Lulu Pass, Cooke City
Lulu Pass
Cooke City
Code
HS-AMu-R3-D3-O
Elevation
10200
Aspect Range
E-N
Latitude
45.07090
Longitude
-109.95800
Notes
A rider on 02/23/2024 triggered a large avalanche on the north side of Fisher Mountain near Lulu Pass. He was caught and carried downhill but luckily was not buried or injured. On the east side of the mountain, another avalanche was observed by the party and likely happened at the same time. This avalanche either happened sympathetically from the large slide or was remotely triggered by the rider.
Number caught
1
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Snowmobile
Trigger Modifier
u-An unintentional release
R size
3
D size
3
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
36.0 inches
Vertical Fall
200ft
Slab Width
200.00ft
Images
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
Riders on 02/23/2024 saw an avalanche that appeared to of broken naturally. However, a rider on 02/23/2024 triggered a steep slope around the corner and could likely have remotely triggered this avalanche as well. Photo: D.Shelley
Avalanche Details: Snowmobiler triggered Avalanches (2) near Lulu Pass, Cooke City
Forecast link: GNFAC Avalanche Forecast for Sun Feb 25, 2024
Cooke City, 2024-02-23
Forecast link: GNFAC Avalanche Forecast for Sun Feb 25, 2024
A snowmobiler triggered a large avalanche on the north side of Fisher Mountain on 02/23/2024. He was caught and carried downhill but luckily was not buried. Photo: D.Shelley
A snowmobiler triggered a large avalanche on the north side of Fisher Mountain on 02/23/2024. He was caught and carried downhill but luckily was not buried. Photo: D.Shelley
Avalanche Details: Snowmobiler triggered Avalanches (2) near Lulu Pass, Cooke City
Cooke City, 2024-02-23
Remotely Triggered Avalanches above McAtee Creek
Buck Ridge
Northern Madison
Code
HS-AMr-R2-D2-O
Elevation
9600
Aspect
NE
Latitude
45.17490
Longitude
-111.44600
Notes
From obs: "North facing aspect above McAtee creek. Triggered one remotely while traversing below, ~150 yards away, and likely triggered the second one from below as well but cannot confirm. 4-6 foot crowns, 50-100 yards wide, ran 75-100 yards"
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
2
D size
2
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
48.0 inches
Vertical Fall
200ft
Slab Width
250.00ft
Images
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
Riders triggered this pair of avalanches while crossing below this terrain, roughly 150 yards away. The location of the triggers is marked by the "x's" in the photo. Photo: M. Rolfson
Riders triggered this pair of avalanches while crossing below this terrain, roughly 150 yards away. Photo: M. Rolfson
Avalanche Details: Remotely Triggered Avalanches above McAtee Creek
Northern Madison, 2024-02-23
Rider on 02/23/2024 observed this large avalanche next to another avalanche they had triggered remotely. They likely triggered this one as well from afar while cross terrain below. Photo: M. Rolfson
Avalanche Details: Remotely Triggered Avalanches above McAtee Creek
Forecast link: GNFAC Avalanche Forecast for Sat Feb 24, 2024
Northern Madison, 2024-02-23
Forecast link: GNFAC Avalanche Forecast for Sat Feb 24, 2024
Riders on 02/23/2024 triggered this avalanche from 150 yards away while traversing below. Photo: M. Rolfson