24-25

Wet Snow Avalanches Hit Hyalite Road

Date

From Text message: “Clean up on aisle hyalite!  Couple small wet slides between the retaining wall and practice rock, big enough to reduce the road to one lane.”

Region
Northern Gallatin
Location (from list)
Hyalite - main fork
Observer Name
Kyle Marvinney

Snowmobile Triggered Avalanche Near Lulu Pass

Lulu Pass
Cooke City
Code
SS-AMu-R1-D1-I
Elevation
9700
Aspect
E
Latitude
45.06820
Longitude
-109.95700
Notes

Observed a snowmobile triggered avalanche today. East facing slope, approx 9700', between Fischer Peak and LuLu pass. Rider was not caught. HS-AMu-D1-R1-I. Observed lots of wind transport and loading from strong w/sw winds today. 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
Trigger Modifier
u-An unintentional release
R size
1
D size
1
Bed Surface
I - Interface between new and old snow
Problem Type
Wind Slab
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Rider-Triggered Wind Slab

Buck Ridge
Northern Madison
Code
SS-AMu-R2-D2
Latitude
45.17190
Longitude
-111.38000
Notes

From IG Message/ Stories: “Took a short ride with the recent storm slab yesterday. A good reminder to keep only one rider exposed at a time, and to be ready for anything. Stay safe out there.”

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Snowmobile
Trigger Modifier
u-An unintentional release
R size
2
D size
2
Slab Thickness
6.0 inches
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Rider-Triggered Wind Slab

Date
Activity
Snowmobiling

From IG Message/ Stories: “Took a short ride with the recent storm slab yesterday. A good reminder to keep only one rider exposed at a time, and to be ready for anything. Stay safe out there.”

Snowmobile Triggered Avalanche-Cooke City

Date
Activity
Skiing

Observed a snowmobile triggered avalanche today. East facing slope, approx 9700', between Fischer Peak and LuLu pass. Rider was not caught. HS-AMu-D1-R1-I. Observed lots of wind transport and loading from strong w/sw winds today. 

Region
Cooke City
Location (from list)
Lulu Pass
Observer Name
Nick Gaddy