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PROFESSIONAL OBSERVATION FORM
 Start Date: 01.20.19 Name: VandenBos Operation: SAC
 Drainage/Route:  Frenchmans Observed Terrain:  7,300-9,600' Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: X Precip: S3 Temps:
 Ridgeline Wind: Moderate and Gusty from the SW
 Blowing Snow: M Snow Available for Transport: Large amounts
 Comments: Snowing hard throughout the afternoon. 12cm accumulation on the sled between ~12:30 and 5:00pm.
AVALANCHE OBSERVATIONS
None Reported
 Comments: None observed, terrible visibility.
SNOWPACK OBSERVATIONS
 HS: 130cm 
 Upper Pack: 40cm PP 
 Middle Pack: 4F+ 1-2mm FC at base, 1F RG in middle, 4F+ DF -> RG on top. Whole package is behaving as a meaty slab. 
 Lower Pack: 20-30cm DH. Moist and 4F at ground, still dry and F on top. DH is being slowly squashed,  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Deep Persistent Slab

Layer/Depth:
100cm

Likelihood of Triggering
Sensitivity:


Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: Feels like a true deep persistent slab problem in the general Salmon headwaters vicinity, at least towards the heads of the drainages. Snowpack is likely shallower near the mouths.
STABILITY TESTS
 Stability Test Results: ECTNs M in new snow interfaces, ECTN H at 1/5 (?). No results on tap tests on DH. PST 32/100 END down 100cm (x2) on DH.
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Comments: Isolated cracking in fresh wind slabs, more rarely in storm snow in sheltered areas.
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend: