Pro Field Report
Basic Information
Observation Details
Observation Date:
December 31, 2020Submitted:
December 31, 2020Observer:
SAC - Ethan DavisZone or Region:
Sawtooth and Western Smoky MtnsLocation:
Beaver Creek (Primarily SE-S-SW-W-NW, up to 9,300')Signs of Unstable Snow
Recent Avalanches?
YesCracking?
None ExperiencedCollapsing?
Isolated
One small collapse in flatter terrain near the creek bottom on a S-facing slope.
Snow Stability
Stability Rating:
FairConfidence in Rating:
ModerateStability Trend:
ImprovingBottom Line
Only a couple of small loose snow avalanches were observed. Possibly a thin slab as well, but very small. The December facets (12/11 layer) are >2' deep and "stronger" here than in the shallower packs I've been in recently (approaching 4F at the base). This layer looked better in the south-facing pit than in the north. If storms deliver next week we may see very large (D3) slides.
Media/Attachments
Advanced Information
Weather Summary
Cloud Cover:
Partly CloudyWind:
CalmNew/Recent Snowfall:
HST = 15 cmVery light snowfall throughout the day with little accumulation. Sun popped out here and there but it was never "sunny". Mild temps (mid-20s F)?
Avalanche Problems
| Problem | Location | Distribution | Sensitivity | Size | Comments |
|---|---|---|---|---|---|
Persistent Slab
|
|
Layer Depth/Date: 70 cm Weak Layer(s): Dec 11, 2020 (FCsf) Comments: Only one localized collapse on a S-facing slope. Percolation columns and 4F moist snow in S pit. Dry F->4F in WNW pit. |
Terrain Use
We stuck to slopes <35 degrees unless they were short and not connected to larger slopes above.