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PROFESSIONAL OBSERVATION FORM
 Start Date: 10.23.19 Name: VandenBos - OFF DUTY Operation: SAC
 Drainage/Route:  Lorenzo Observed Terrain:   Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps:
 Ridgeline Wind:
 Blowing Snow: Snow Available for Transport:
AVALANCHE OBSERVATIONS
None Reported
SNOWPACK OBSERVATIONS
 HS: Highly variable HS, observed anywhere from 0 cm in scoured areas to 80cm in drifted areas. 
 Upper Pack:  
 Middle Pack:  
 Lower Pack:  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Primary Concern Comments: 
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Comments: Localized cracking in stiff wind drifts sitting on older snow (both icy and unconsolidated). Required some effort to initiate fractures
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
FILE ATTACHMENTS

191023 Cracks in Wind Slab.JPG
Isolated cracking in fresh, stiff wind slabs. Needed older snow underneath the fresh slabs for this to occur.