On Mar 1 we also spotted one older cornice-fall triggered avalanche in Sunlight Basin. Photo: GNFAC
Avalanche Details: Cornice fall triggered slide in Sunlight Basin
Southern Madison, 2025-03-02
24-25
On Mar 1 we also spotted two cornice-fall triggered (R2-D2) avalanches that broke earlier this week - one in Sunlight Basin and one in Sage Basin. Photo: GNFAC
Avalanche Details: Cornice Fall Triggered Avalanche in Sage Basin
Forecast link: GNFAC Avalanche Forecast for Tue Mar 4, 2025
Southern Madison, 2025-03-02
Forecast link: GNFAC Avalanche Forecast for Tue Mar 4, 2025
On Mar 1 We also spotted one cornice-fall triggered (R2-D2) avalanche that broke earlier this week in Sage Basin. Photo: GNFAC
Avalanche Details: Cornice Fall Triggered Avalanche in Sage Basin
Southern Madison, 2025-03-02
At the top of Carrot Basin, we saw a small avalanche (R1-D1) on a N aspect that likely broke yesterday on buried weak layers. Photo: GNFAC
Avalanche Details: Small PWL Avalanche in Carrot Basin
Forecast link: GNFAC Avalanche Forecast for Sun Mar 2, 2025GNFAC Avalanche Forecast for Mon Mar 3, 2025
Southern Madison, 2025-03-02
Forecast link: GNFAC Avalanche Forecast for Sun Mar 2, 2025GNFAC Avalanche Forecast for Mon Mar 3, 2025
At the top of Carrot Basin, we saw a small avalanche (R1-D1) on a N aspect that likely broke yesterday on buried weak layers. Photo: GNFAC
Avalanche Details: Small PWL Avalanche in Carrot Basin
Southern Madison, 2025-03-02
Cornice Fall Avalanches in upper South Cottonwood
Alex Lowe Peak
Northern Gallatin
Code
C-N-R1-D1.5
Elevation
9000
Aspect
N
Latitude
45.42720
Longitude
-111.01400
Notes
Pictures of two cornice triggered avalanches way up the South Cottonwood drainage that was viewed from Alex Lowe. Looks to be in the recent days, around 9,000 feet North facing.
Also a massive cornice that had cracked and was slowly making its way towards falling down. Cornice was around 50 feet long, and largely overhanging. On the standard ascent of the East Ridge of Alex Lowe, the skin track usually travels below this cornice while ascending to the ridge.
Number caught
0
Number buried
0
Avalanche Type
Cornice fall
Trigger
Natural trigger
R size
1
D size
1.5
Problem Type
Cornice Fall
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Multiple Avalanches
Advisory Year
Pictures of two cornice triggered avalanches way up the South Cottonwood drainage that was viewed from Alex Lowe. Looks to be in the recent days, around 9,000 feet North facing. Photo: S Lipsteuer
Avalanche Details: Cornice Fall Avalanches in upper South Cottonwood
Forecast link: GNFAC Avalanche Forecast for Sun Mar 2, 2025
Northern Gallatin, 2025-03-01
Forecast link: GNFAC Avalanche Forecast for Sun Mar 2, 2025
A massive cornice had cracked and was slowly making its way towards falling down. Cornice was around 50 feet long, and largely overhanging. Photo: S Lipsteuer
A massive cornice that has cracked and is slowly making its way towards falling down. Cornice was around 50 feet long, and largely overhanging. On the standard ascent of the East Ridge of Alex Lowe, the skin track usually travels below this cornice while ascending to the ridge. Photo S Lipsteuer
Wet Loose Avalanche Pioneer Mountain
Other place
Northern Madison
Code
WL-N-R1-D2
Aspect
S
Latitude
45.65530
Longitude
-110.55800
Notes
Natural point release avalanche observed from the YC. Occurred out of bounds on the South side of Pioneer Mountain.
Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
R size
1
D size
2
Problem Type
Loose Wet
Images
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year