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PROFESSIONAL OBSERVATION FORM
 Start Date: 12.04.17 Name: VandenBos, Wieland Operation: SAC
 Drainage/Route:  SSW ridge Goat Peak Observed Terrain:  6,400-10,100' Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: 30 cm Sky: CLR Precip: Temps:
 Ridgeline Wind: Light and Intermittent from the NW
 Blowing Snow: L Snow Available for Transport: Large amounts
AVALANCHE OBSERVATIONS
None Reported
 Comments: Drove to Galena and noted several deeper crowns from mid-storm slides on northerly aspects of Spring-Cherry divide and SW ridge of Cerro Ciento. Up higher, observed smaller, more recent avalanches on generally southerly terrain, likely from slabs that formed after frontal passage.
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:
30-60cm

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: Widespread wind affected snow in upper and middle elevation terrain. Slabs encountered today near ridgelines were very stubborn, borderline unreactive .
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Comments: Very isolated cracking in fresh slabs today.
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend: Improving
 Comments (aspects and elevations of instability, etc): Stability between fair and moderate.
FILE ATTACHMENTS

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Cerro Ciento crown (NW aspect)

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Boulder Peak crown (SE aspect)

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Boulder Peak crown (SE aspect)

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W Fk Big Wood River Headwaters crown (SW aspect)

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W Fk Big Wood River Headwaters crown (SW aspect)