Climber caused icefall that triggered a small avalanche. Thankfully, the bed surface was ice just a few inches down and the belayer was just outside the path. Minor entrainment Photo: Anonymous
19-20
Climber caused icefall that triggered a small avalanche. Thankfully, the bed surface was ice just a few inches down and the belayer was just outside the path. Minor entrainment Photo: Anonymous
Cooke City Wind Slab
COOKE CITY
Cooke City
Code
SS-N-R1-D1-I
Elevation
8600
Aspect
SE
Latitude
45.02020
Longitude
-109.93800
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
1
D size
1
Bed Surface
I - Interface between new and old snow
Problem Type
Wind-Drifted Snow
Images
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Cooke City Deep Slab Natural
COOKE CITY
Cooke City
Code
HS-N-R2-D2-O
Elevation
9500
Aspect
W
Latitude
45.02020
Longitude
-109.93800
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
Slab Thickness
60.0 inches
Images
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
SEerly aspect around 8600'. A thinner, smaller storm slab, triggered by dry loose from above. Photo: B. Fredlund
Avalanche Details: Cooke City Wind Slab
Cooke City, 2020-02-03
Hebgen/West Yellowstone snow rangers and Montana State Parks installed this beacon checker at the trail into Lionhead Ridge. It is a great asset to promote avalanche awareness in our area. Photo: J. Norlander
SWerly aspect around 9500'. Deep slab, mid-slope. I'd estimate that crown to be about 4-6' deep. Photo: B. Fredlund
Avalanche Details: Cooke City Deep Slab Natural
Forecast link: GNFAC Avalanche Forecast for Tue Feb 4, 2020
Cooke City, 2020-02-03
Forecast link: GNFAC Avalanche Forecast for Tue Feb 4, 2020
Small avalanche triggered in new snow by ice climber, Hyalite
Hyalite - main fork
Northern Gallatin
Code
SS-NIu-R1-D1
Aspect
W
Latitude
45.44720
Longitude
-110.96200
Notes
"Climber caused icefall that triggered small avalanche. Thankfully, the bed surface was ice just a few inches down and belayer was just outside the path. Minor entrainment."
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Ice fall
Trigger Modifier
u-An unintentional release
R size
1
D size
1
Problem Type
New Snow
Images
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year