Sawtooth Avalanche Center

Pro Field Report

Basic Information

Observation Details

Observation Date:
January 13, 2020 - January 13, 2020
Submitted:
January 14, 2020
Observer:
Pro
Zone or Region:
Soldier and Wood River Valley Mtns
Location:
Durrance

Signs of Unstable Snow

Recent Avalanches? 
None Observed
Cracking? 
Isolated
Collapsing? 
Isolated

Snow Stability

Stability Rating: 
Fair
Confidence in Rating: 
Moderate
Stability Trend: 
Worsening

Bottom Line

my last trip here was notable for lack of cohesive slab above our known LOC's. (that and bushwacking on the exit).

now, I'm stepping back.

the effect of developing windslab, wind transport and weight upon known structure problems trending to worsening instability. handpits sometimes failing on isolation. 12/7 still discernable and down about 60cm @ 8800 on S aspect with propagation at mod strength scores.

as much as I'd like the PWL to get crushed, I worry we may be building to more "flush" by weeks end here.

Advanced Information

Weather Summary

Cloud Cover:
Mostly Cloudy
Wind:
Light , NW

10cm. lots available for transport.

Avalanche Problems

Problem Location Distribution Sensitivity Size Comments
Wind Slab
Isolated
Specific
Widespread
Unreactive
Stubborn
Reactive
Touchy
D1
D1.5
D2
D2.5
D3
D3.5
D4
D4.5
D5
Persistent Slab
D1
D1.5
D2
D2.5
D3
D3.5
D4
D4.5
D5
Layer Depth/Date: 12/7- down 60 @8800', S aspect

Terrain Use

closed >low 30 terrain. very mindful of terrain connected to enlarging windslabs ATL.