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PROFESSIONAL OBSERVATION FORM
 Start Date: 02.05.18 Name: VandenBos Operation: SAC
 Drainage/Route:  Central Boulders Observed Terrain:   Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps:
 Ridgeline Wind: Light and Intermittent from the NW
 Blowing Snow: L Snow Available for Transport:
 Comments: Clouds were in and out with periods of sun in the afternoon, then some light flurries in the late afternoon through sunset
AVALANCHE OBSERVATIONS
None Reported
 Comments: None observed.
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Isolated
Terrain
  Primary Concern Comments: Some small slabs are stubborn but many more are unreactive. But I'm sure if you spent enough time looking around you could find a few wind slabs to trigger.
 
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Problem 2 Comments: Terrible structure at middle elevations. 1219 down 75cm at 8,600'. No sign of surface hoar.
 Comments: Wind slabs are primary concern in upper elevation terrain, but persistent slabs are primary concern at middle.
STABILITY TESTS
 Stability Test Results: ECTP19 down 75cm. PST 42/100 END down 75cm. W aspect @ 8,600'.
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Comments: Isolated cracking in a few fresh windslabs.
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend: