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PROFESSIONAL OBSERVATION FORM
 Start Date: 12.21.17 Name: VandenBos Operation: SAC
 Drainage/Route:  Williams Peak east shoulder Observed Terrain:  6,400-9,400' Zone/Region:  Sawtooth Mountains
WEATHER OBSERVATIONS
 HN24: HST: 15-20cm Sky: CLR Precip: Temps:
 Ridgeline Wind: Calm from the N
 Blowing Snow: L Snow Available for Transport: Large amounts
 Comments: Calm, cold, and clear. Very light north winds occasionally blowing along ridgelines, transporting small amounts of snow. Still plenty of snow available for transport if the winds pick up.
AVALANCHE OBSERVATIONS
None Reported
 Comments: Little natural avalanche activity from the storm.
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Primary Concern Comments: 
 
Avalanche Characteristics
Character/Avalanche Problem:
Dry Loose

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Problem 2 Comments: 
 Comments: A little bit of a toss up between wind slabs and loose avalanches as primary concern as I wasn't spending time in terrain that was either wind loaded enough to produce a wind slab concern, nor steep enough to produce a loose concern. Both merit attention.
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Comments: Very isolated cracking in new snow.
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend: