Northern Gallatin
Human triggered hard wind slab near Fairy Lake
Fairy Lake
Bridger Range
Code
HS-AU-R4-D2-O
Latitude
45.90430
Longitude
-110.95800
Notes
Riders near Fairy Lake reported this slide on Saturday 12/21. Photo: @turbo_dieshall
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Unknown artificial trigger
R size
4
D size
2
Bed Surface
O - Old snow
Problem Type
Wind-Drifted Snow
Slab Thickness
42.0 inches
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Snowmobile remote triggered 5' deep wind slab
NORTHERN GALLATIN RANGE
Northern Gallatin
Code
HS-AMr-R2-D1.5-O
Latitude
45.47550
Longitude
-110.95000
Notes
From IG message: "5' thick wind slab just behind little bear remote triggered riding along the ridge." @skidooin_it
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Snowmobile
Trigger Modifier
r-A remote avalanche released by the indicated trigger
R size
2
D size
1.5
Bed Surface
O - Old snow
Problem Type
Wind-Drifted Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
Large Collapse on hard wind slab in Hyalite
Flanders Creek
Northern Gallatin
Code
HS-AF-O
Elevation
7900
Aspect
NW
Latitude
45.43880
Longitude
-110.92600
Notes
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Foot penetration
Bed Surface
O - Old snow
Problem Type
Wind-Drifted Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Red Flag
Advisory Year
Riders near Fairy Lake reported this slide on Saturday 12/21. Photo: @turbo_dieshall
From IG message: "5' thick wind slab just behind little bear remote triggered riding along the ridge." @skidooin_it
From Instagram: "Couple of small natural wind slabs around 10,200’ NE in Hyalite. Not sure exactly how recent. Played it conservative and chose to stay off a similar slope." B. Gill
Avalanche Details: Shallow wind slab avalanches in Hyalite
Forecast link: GNFAC Avalanche Forecast for Fri Dec 20, 2019
Northern Gallatin, 2019-12-19
Forecast link: GNFAC Avalanche Forecast for Fri Dec 20, 2019
Shallow wind slab avalanches in Hyalite
Maid of the Mist
Northern Gallatin
Code
SS-N
Aspect
E
Latitude
45.41640
Longitude
-110.97000
Notes
1. From an email: The wind sure moved snow around up Hyalite last night, and our party observed several small to medium-sized releases that occured on a heavily-loaded east aspect overnight. None stepped down in the snowpack, but they certainly could have taken a person for a ride. Overalll, stability seemed to be good, with the exception of isolated wind-loaded areas.
2. From IG: Couple of small natural wind slabs around 10,200’ NE in Hyalite. Not sure exactly how recent. Played it conservative and chose to stay off a similar slope.
Number caught
0
Number buried
0
Avalanche Type
Soft slab avalanche
Trigger
Natural trigger
Problem Type
Wind-Drifted Snow
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year
From an email, "... our party observed several small to medium-sized releases that occured on a heavily-loaded east aspect overnight. None stepped down in the snowpack, but they certainly could have taken a person for a ride. Overalll, stability seemed to be good, with the exception of isolated wind-loaded areas." Photo S. Reinsel