Northern Gallatin

3 skiers caught, 2 injured on Woody Ridge near Cooke

Woody Ridge
Cooke City
Code
HS-ASu-R2-D2.5-O
Elevation
9500
Aspect
W
Latitude
44.99330
Longitude
-109.92500
Notes

On March 24, 2022 a group of six skiers descended the west side of Woody Ridge near an area locally
known as KNB's. Approximately a third of the way down the slope the group triggered an avalanche that
crossed three gullies, broke 1-3 feet deep, 275 feet wide (measured on GoogleEarth) and ran 700 feet
vertical. Five skiers were stopped, watching one descend the slope. Three of the stopped skiers were in a
row of dense trees directly above and adjacent to where the slide broke and two were stopped a few
feet below the trees. The avalanche caught the skier and two members of the group who were stopped
downhill of the trees. One skier was pinned against a tree and the avalanche passed him. The second
skier slid into a tree sustaining multiple suspected rib fractures. The third, who was actively skiing, was
caught, carried and partially buried with just his arm sticking out of the snow, 500 vertical feet below the
avalanche crown. All three captured skiers successfully deployed their airbags.

The three remaining members of the group switched their avalanche transceivers to search and located
all three victims, and unburied the partially buried skier within five minutes. All members of the group
had formal avalanche training: Avalanche Level 1 and 2 up to a Pro Level 2. All members of the group had
avalanche transceivers, shovels, probes and airbags. The group performed field first aid and
self-evacuated to Cooke City.

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Number of slides
1
Number caught
3
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Skier
Trigger Modifier
u-An unintentional release
R size
2
D size
2.5
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
24.0 inches
Vertical Fall
700ft
Slab Width
275.00ft
Weak Layer Grain type
Faceted Crystals
Weak Layer grain size
2.00mm
Weak Layer Hardness
F
Slab Layer Grain Type
Decomposing and Fragmented precipitation particles
Slab Layer Hardness
1F
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Cornice collapse, many wet slides in Hyalite

Maid of the Mist
Northern Gallatin
Code
WL
Latitude
45.41640
Longitude
-110.97000
Notes

Solar input triggered small cornice collapse while booting up fat maid that ran by our group, but did not trigger anything from its impact on the slope. We saw many wet avalanches both small and large, mostly loose, but one slab that came down the south east face of Bole after skiing the pinner. 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Warming

Date
Activity
Skiing

Solar input triggered small cornice collapse while booting up fat maid that ran by our group, but did not trigger anything from its impact on the slope. We saw many wet avalanches both small and large, mostly loose, but one slab that came down the south east face of Bole after skiing the pinner. Due to this information we chose not to ascend the south facing gully that follows the ridge north of Bole and ski the north couloir into Alex Lowe basin. On the north aspects we found punchy, difficult, wind affected snow from the most recent storm. It was cold, dry snow, completely un-reactive in our tests, but hooky challenging skiing. 

Region
Northern Gallatin
Location (from list)
Maid of the Mist
Observer Name
Jacko

stable in lick creek

Date
Activity
Skiing

Firm wind / sun crust on most West and South facing aspects - 1 - 2" thick

Backside of Lick Creek Ridge skied very well, still evidence of the avalanche that you triggered under the cornice, but 3 - 4 tracks had sent that cornice since the last storm cycle with a couple making unfortunate hard sweeping RH turns on that steep section with no additional sluff or fracture visible.  Minimal wind transport on that side.

Region
Northern Gallatin
Location (from list)
Lick Creek
Observer Name
Bill Schell