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PROFESSIONAL OBSERVATION FORM
 Start Date: 12.01.17 Name: VandenBos Operation: SAC
 Drainage/Route:  Spring-Cherry Observed Terrain:  7,000-10,000' Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: 10cm Sky: BKN Precip: Temps:
 Ridgeline Wind: Light and Intermittent
 Blowing Snow: Prev Snow Available for Transport: Small amounts
 Comments: WX obs from late afternoon. Just a dusting of recent snow at the highway. 10cm at 10,000'.
AVALANCHE OBSERVATIONS
None Reported
 Comments: Observed what appeared to be a small, older crown on a heavily wind-loaded northerly aspect on the west ridge of Cerro Ciento.
SNOWPACK OBSERVATIONS
 HS: 60cm (9,500') 
 Upper Pack: 10cm recent snow sitting on a stiff, icy, 8cm thick crust from the Thanksgiving meltdown 
 Middle Pack: Two thin ice layers (<1cm thick)separated by decomposing precip grains 
 Lower Pack: Moist facets glued to the dirt 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:
30cm (max)

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Isolated
Terrain
  Primary Concern Comments: 
 Comments: Fresh wind slabs were the only avalanche problem I encountered today.
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Comments: Minor, isolated cracking in fresh slabs but only where they are sitting directly on the Thanksgiving surface.
SNOW STABILITY
 Snow Stability Rating for your observed area: Good Confidence: Trend: Improving