24-25

E Henderson Crown Profile

Date
Activity
Skiing

From email: "We popped over to the recent avalanche on the east side and got a crown profile. Avalanche is NE facing, 10090. HS-N-D2-R4-O

Crown is 105 cm deep, breaking on surface hoar. Details are in attached profile 

Something noteworthy.. the slope angle at the crown is 30.1 degrees." 

Region
Cooke City
Location (from list)
Henderson Mountain
Observer Name
J Mundt

Wind slabs in Flanders

Flanders Creek
Northern Gallatin
Code
SS-AFu-R1-D1
Elevation
7600
Aspect Range
W-NW
Latitude
45.45210
Longitude
-110.92600
Notes

Small wind slab in hyalite at the start to champaign slot, 7600’, WNW, ~8” crown

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Foot penetration
Trigger Modifier
u-An unintentional release
R size
1
D size
1
Problem Type
Wind-Drifted Snow
Slab Thickness
8.0 inches
Vertical Fall
35ft
Slab Width
20.00ft
Images
Flanders wind slab 2
Flanders wind slab 1
Snow Observation Source
Wind slabs in Flanders
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
24-25

Storm slabs on the Ramp

The Ramp
Bridger Range
Code
SS
Latitude
45.82880
Longitude
-110.93100
Notes

Toured up the ramp at around 4 yesterday, snow was still falling heavily. Counted 4 or 5 natural storm slabs breaking mostly within the new snow. A skier before us triggered a slide in the chutes on a ski cut. I struggled to find a clean interface where the storm slabs were breaking on a few hand pits, mostly just a lot of fresh snow. 

Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Problem Type
Storm Slab
Snow Observation Source
Storm slabs on the Ramp
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
24-25

Wind slabs in Flanders

Date
Activity
Ice Climbing

Small wind slab in hyalite at the start to champaign slot, 7600’, WNW, ~8” crown

Region
Northern Gallatin
Location (from list)
Flanders Creek
Observer Name
S. Bonucci

Remote Cornice Trigger and Propagation in Lionhead

Date
Activity
Skiing

While touring up a low-angle ridge in the northern Lionhead, I experienced several large collapses, notably one that triggered a cornice fall from 50’ away. Another remote collapse caused about 500’ of an E facing bowl to propagate, but not slide. ~9200’ E-SE

Region
Lionhead Range
Observer Name
Nick Sramek

Avalanches in Taylor Fork

Cabin Creek
Southern Madison
Code
SS-N-R2-D2-G
Elevation
9400
Aspect
NE
Latitude
44.89490
Longitude
-111.22800
Notes

We toured into Carrot Basin and Sage Creek this morning. The storm ended and skies were broken by 1000. The spx is about 1M deep and the surface conditions are soft and excellent in most areas with wind effect along the ridges. At about 130 we moved from carrot to sage creek and notcied three small and one large avalanche along cabin creek divide that were not present earlier in the day. Most looked remote and were isolated pockets (R1/D1). As we rounded the corner into sage there was one fresh larger slide (R2/D2) at about 9,400' on a NE facing slope. It appeared to be natural (remote?), failed at the ground and was about 200' wide and ran for 200' the crown was 2-3' deep.

Number of slides
3
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
R size
2
D size
2
Bed Surface
G - Ground
Problem Type
Persistent Weak Layer
Slab Thickness
30.0 inches
Vertical Fall
200ft
Slab Width
200.00ft
Snow Observation Source
Avalanches in Taylor Fork
Slab Thickness units
inches
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
24-25

Storm slabs on the Ramp

Date
Activity
Skiing

Toured up the ramp at around 4 yesterday, snow was still falling heavily. Counted 4 or 5 natural storm slabs breaking mostly within the new snow. A skier before us triggered a slide in the chutes on a ski cut. I struggled to find a clean interface where the storm slabs were breaking on a few hand pits, mostly just a lot of fresh snow. 

Region
Bridger Range
Location (from list)
The Ramp
Observer Name
J Alford
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