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PROFESSIONAL OBSERVATION FORM
 Start Date: 11.29.17 Name: Davis, Linnet Operation: SAC
 Drainage/Route:  Avalanche Peak Observed Terrain:  8100-9400', N-E-S Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: 4 cm HST: 4 cm Sky: BKN Precip: Temps:
 Ridgeline Wind: Light and Intermittent from the E
 Blowing Snow: Prev Snow Available for Transport: Small amounts
 Comments: Sun tried to pop through in the morning. More clouds later in the tour, observed only till 1200. Calm and cold for the most part.
AVALANCHE OBSERVATIONS
None Reported
 Comments: No new avalanche observations.
SNOWPACK OBSERVATIONS
 HS: 100 cm on North 
 Upper Pack: 20 cm F recent snow 
 Middle Pack: Thanksgiving crust/facet/crust sandwich with generally strong snow below. 
 Lower Pack: 15 cm moist facets 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
100 cm

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Specific
Terrain
  Primary Concern Comments: Would require quite a thump to get anything going. The facets at the top of Avalanche Peak were smaller and wetter than those near the top of Wx Station Peak.
 Comments: 10-20 cm isolated wind slabs at the top of Avalanche Peak, but this area isn't a great place to look for wind affect.
STABILITY TESTS
 Stability Test Results: no standard tests
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)   Length: ski width
SNOW STABILITY
 Snow Stability Rating for your observed area: Very Good Confidence: HIGH Trend: Improving
BOTTOM LINE
 Comments: Basal facets are more of a concern at upper elevations (specifically shaded slopes) where they are larger and drier. I still think we will see avalanches on the Thanksgiving crust/facet/crust sandwich with additional load, although this setup was welded together a bit more on Avalanche Peak than what I saw a few hundred feet higher on Wx Station Peak on Monday. Storm snow seems well bonded to the TG crust.