22-23

Via IG: “Large natural avalanche on the east side of redstreak peak down near West Yellowstone. 

And then another natural one right on the shoulder of white peak on the boundary.” Photo: S. Mooney

 

Southern Madison, 2023-03-13

Electric Peak Avalanches

Electric Peak
Southern Gallatin
Code
Latitude
45.00800
Longitude
-110.83700
Notes

Via IG: “Electric peak via Betty gulch avalanches. Assuming they are natural!”

Number of slides
3
Number caught
0
Number buried
0
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year

Dudley Creek Avalanche

Dudley Creek
Northern Madison
Code
SS-ASc-R2-D1.5-I
Elevation
9200
Aspect
SE
Latitude
45.28650
Longitude
-111.29000
Notes

From Obs: "On Saturday we toured up Dudley Creek. At around 1pm we ski cut an isolated, wind loaded pocket on a SE aspect at approximately 9200ft elevation and released a wind slab (see photo). The slab was about 20 feet wide, about 1 foot at it's deepest, and ran for about 200 feet. Staying wary of wind loading, we dug a pit on a NE aspect, in a spot without evidence of significant wind loading, and received an ECTNX. Although we did not identify any failure on buried weak layers in this location, it will remain something to watch for with more snow and warmer temps on the way."

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Skier
Trigger Modifier
c-A controlled or intentional release by the indicated trigger
R size
2
D size
1.5
Bed Surface
I - Interface between new and old snow
Problem Type
Wind-Drifted Snow
Slab Thickness
12.0 inches
Vertical Fall
200ft
Slab Width
20.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

From Obs: "On Saturday we toured up Dudley Creek. At around 1pm we ski cut an isolated, wind loaded pocket on a SE aspect at approximately 9200ft elevation and released a wind slab (see photo). The slab was about 20 feet wide, about 1 foot at it's deepest, and ran for about 200 feet. Staying wary of wind loading, we dug a pit on a NE aspect, in a spot without evidence of significant wind loading, and received an ECTNX.

Avalanche Details: Dudley Creek Avalanche
Northern Madison, 2023-03-13

Rasta Chutes Avalanche

Scotch Bonnet
Cooke City
Code
ASu-R2-D2
Latitude
45.07330
Longitude
-109.94800
Notes

From Obs: "Heard tree breakage, saw plumes of snow and sliding snow at the bottom of the slide path. Our group spoke with the sledders and skiers that were on the slope and confirmed none were caught. Skiers reported feeling slide tremble and backed down the mountain. The main breakage was near top of the third shoot from the lookers right."

Number of slides
1
Number caught
0
Number buried
0
Trigger
Skier
Trigger Modifier
u-An unintentional release
R size
2
D size
2
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

From Obs: "Heard tree breakage, saw plumes of snow and sliding snow at the bottom of the slide path. Our group spoke with the sledders and skiers that were on the slope and confirmed none were caught. Skiers reported feeling slide tremble and backed down the mountain. The main breakage was near top of the third shoot from the lookers right." Photo: N. Repphun

Cooke City, 2023-03-13