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PROFESSIONAL OBSERVATION FORM
 Start Date: 01.02.17 End Date: 01.02.17 Name: Davis, Liles Operation: SAC
 Drainage/Route:  Baker Creek Observed Terrain:  6600-9500', All Aspects Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: 2 HST: 2 Sky: BKN Precip: S1 Temps:
 Ridgeline Wind: Calm
 Blowing Snow: Prev Snow Available for Transport: Small amounts
 Comments: Snowed off and on with some short breaks of blue. Calm throughout. Generally flat light and poor visibility.
AVALANCHE OBSERVATIONS
 No. Location Date Size Type Trigger Aspect Elevation Comments
 1 Baker Lake Within past week 2 SS N NE 9500 Wind-loaded pocket below ridge. 300' W x 1,000' L.
SNOWPACK OBSERVATIONS
 HS: SSE @ 8400': 85 cm 
 Upper Pack: New snow (F) over a MFcr (P). 
 Middle Pack: Decomposing storm snow (F) and older facets (4F+ to 1F). 
 Lower Pack: 10 cm of strong, wet, rounding facets (1F). Pulled up dirt at the bottom of the column, difficult to pry the column from the ground in all tests. These were the strongest and wettest facets i've found at the ground.  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:
20-50 cm

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Specific
Terrain
  Primary Concern Comments: Loading patterns were a bit obscured with new snow.
 
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
85 cm

Likelihood of Triggering
Sensitivity:
Unreactive

Spatial Distribution:
Widespread
Terrain
  Problem 2 Comments: I'd expect drier, larger facets on n-slopes but we didn't get the opportunity to dig on true norths.
 Comments: Very subtle crust down 35 cm at a DF/FC interface. Didn't show up in column tests. Lots of scoured slopes and wind-affect on the west side of the Smoky divide above Baker Lake. Some soft slab lower down in channeled terrain below cirques.
STABILITY TESTS
 Stability Test Results: ECTX (x3), ECTP1 down 5 under MFcr.
SNOW STABILITY
 Snow Stability Rating for your observed area: Good Confidence: MODERATE Trend: Improving
 Comments (aspects and elevations of instability, etc): MODERATE in the alpine and LOW below.
BOTTOM LINE
 Comments: I expect that you'd need a heavy load to trigger most of the slabs I saw. There wasn't much to be concerned with below treeline.