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PROFESSIONAL OBSERVATION FORM
 Start Date: 12.09.18 Name: VandenBos Operation: SAC
 Drainage/Route:  Galena Peak Observed Terrain:  up to 9,800' on the western half of the compass Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: SCT Precip: Temps:
 Ridgeline Wind: Light and Intermittent from the W
 Blowing Snow: Snow Available for Transport: None
 Comments: Increasing clouds late in the day. Weak inversion.
AVALANCHE OBSERVATIONS
None Reported
 Comments: Observed 6-8 small (D1) loose snow avalanches on S-SW-W-NW aspects of Galena Peak and one slightly larger (approaching D2) pile of debris on a NW aspect of Galena. I couldn't quite see into the starting zone of the larger slide but it looked like it was probably a loose dry avalanche as well.
SNOWPACK OBSERVATIONS
 HS: 30-60cm 
 Upper Pack: 25-30cm of facets (post-Thanksgiving snow) 
 Middle Pack: 30 cm depth hoar above ~8500' on shaded aspects 
 Lower Pack: Dirt 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Primary Concern Comments: 
 Comments: With the deterioration of the post-Thanksgiving snow we're looking at a persistent slab problem all around the compass, just waiting for the slab on top.
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Collapsing (isolated)    
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
FILE ATTACHMENTS

181209_GalenaPLoose.JPG

181209_GalenaPLoose2.JPG