Southern Gallatin

Wet slide over highway at quake lake

Quake Lake
Southern Madison
Code
WL-N-R3-D2.5
Elevation
7500
Aspect
S
Latitude
44.85340
Longitude
-111.40000
Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Wet loose-snow avalanche
Trigger
Natural trigger
R size
3
D size
2.5
Problem Type
Wet Snow
Snow Observation Source
Slab Thickness units
centimeters
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

Southern gallatin deep slab

SOUTHERN GALLATIN RANGE
Southern Gallatin
Code
HS-N-R4-D4-O
Elevation
9600
Aspect
E
Latitude
44.84960
Longitude
-110.88200
Notes

I went through the area of Three Rivers Peak yesterday, and there had been a pretty nice cycle of large slides recently. One on the east face of Three Rivers broke 6-800’ wide 2-10’+ deep, and ran full track. It only had a couple inches of snow on it, so I think it ran sometime during the recent warm days. Some of the walls along the slide were over 20’ high, and I imagine the debris pile might make it through the summer. 
I also observed a couple older slides on E\NE aspects that were older, but not a whole lot smaller. 

Number of slides
1
Number caught
0
Number buried
0
Avalanche Type
Hard slab avalanche
Trigger
Natural trigger
R size
4
D size
4
Bed Surface
O - Old snow
Problem Type
Persistent Weak Layer
Slab Thickness
90.0 inches
Vertical Fall
1000ft
Slab Width
800.00ft
Snow Observation Source
Slab Thickness units
inches
Single / Multiple / Red Flag
Single Avalanche
Advisory Year

From obs. 4/7/23: "I went through the area of Three Rivers Peak yesterday, and there had been a pretty nice cycle of large slides recently. One on the east face of Three Rivers broke 6-800’ wide 2-10’+ deep, and ran full track. It only had a couple inches of snow on it, so I think it ran sometime during the recent warm days. Some of the walls along the slide were over 20’ high, and I imagine the debris pile might make it through the summer. I also observed a couple older slides on E\NE aspects that were older, but not a whole lot smaller." Photo: S. Reinsel

Southern Gallatin, 2023-04-07

From obs. 4/7/23: "I went through the area of Three Rivers Peak yesterday, and there had been a pretty nice cycle of large slides recently. One on the east face of Three Rivers broke 6-800’ wide 2-10’+ deep, and ran full track. It only had a couple inches of snow on it, so I think it ran sometime during the recent warm days. Some of the walls along the slide were over 20’ high, and I imagine the debris pile might make it through the summer. I also observed a couple older slides on E\NE aspects that were older, but not a whole lot smaller." Photo: S. Reinsel

Southern Gallatin, 2023-04-07

From obs. 4/7/23: "I went through the area of Three Rivers Peak yesterday, and there had been a pretty nice cycle of large slides recently. One on the east face of Three Rivers broke 6-800’ wide 2-10’+ deep, and ran full track. It only had a couple inches of snow on it, so I think it ran sometime during the recent warm days. Some of the walls along the slide were over 20’ high, and I imagine the debris pile might make it through the summer. I also observed a couple older slides on E\NE aspects that were older, but not a whole lot smaller." Photo: S. Reinsel

Southern Gallatin, 2023-04-07

From obs. 4/7/23: "I went through the area of Three Rivers Peak yesterday, and there had been a pretty nice cycle of large slides recently. One on the east face of Three Rivers broke 6-800’ wide 2-10’+ deep, and ran full track. It only had a couple inches of snow on it, so I think it ran sometime during the recent warm days. Some of the walls along the slide were over 20’ high, and I imagine the debris pile might make it through the summer. I also observed a couple older slides on E\NE aspects that were older, but not a whole lot smaller." Photo: S. Reinsel

Southern Gallatin, 2023-04-07

Southern gallatin deep slab

Date
Activity
Skiing

I went through the area of Three Rivers Peak yesterday, and there had been a pretty nice cycle of large slides recently. One on the east face of Three Rivers broke 6-800’ wide 2-10’+ deep, and ran full track. It only had a couple inches of snow on it, so I think it ran sometime during the recent warm days. Some of the walls along the slide were over 20’ high, and I imagine the debris pile might make it through the summer. 
I also observed a couple older slides on E\NE aspects that were older, but not a whole lot smaller. 

Region
Southern Gallatin
Observer Name
Sam Reinsel

From obs 3/26/23: "Saw a couple small natural slides breaking in the new snow.... occurred in the afternoon sometime" Photo: J. Weingarten

Northern Gallatin, 2023-03-27