Sawtooth Avalanche Center

Public Field Report

Observation Details

Observation Date:
December 31, 2020
Submitted:
January 2, 2021
Zone or Region:
Galena Summit and Eastern Mtns
Activity:
Skiing/Snowboarding
Location:
East facing ridge above Anderson Creek Drainage

Triggered Avalanches

Did you trigger any avalanches? 
Yes
Was it intentional? 
No
Avalanche Type:
Soft Slab
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
9550
Aspect:
E
Comments:
Remote triggered a large slide on an east facing slope while traveling on the ridge above Anderson Creek Drainage. The ridge collapsed causing the wind loaded cornice to break free and trigger the week layer 18inches below the surface. The crown was about 150 feet long.

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Soft Slab
Size:
Size 4: Could destroy a railway car, large truck, several buildings, or a substantial amount of forest
Elevation:
9700ish start zone
Aspect:
E
Comments:
Large slide observed East side of Norton Peak.

Signs of Unstable Snow

Did you see shooting cracks? 
Yes, Isolated
Did you experience collapsing or whumpfing? 
Yes, Isolated

Observations

Traveled very cautiously on the ridges, avoiding anything above 28 degrees. On the accent and decent. Weather that day had been partly cloudy with some flurries but cleared enough for us to observe the avalanches on Norton Peak.

Media

Public Field Report: East facing ridge above Anderson Creek Drainage
Public Field Report: East facing ridge above Anderson Creek Drainage
Public Field Report: East facing ridge above Anderson Creek Drainage
Public Field Report: East facing ridge above Anderson Creek Drainage
Public Field Report: East facing ridge above Anderson Creek Drainage
Public Field Report: East facing ridge above Anderson Creek Drainage
Public Field Report: East facing ridge above Anderson Creek Drainage