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PROFESSIONAL OBSERVATION FORM
 Start Date: 03.31.19 Name: VandenBos - OFF DUTY Operation: SAC
 Drainage/Route:  Galena Peak Observed Terrain:  7,300-11,000 Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps:
 Ridgeline Wind: Moderate and Intermittent from the SW
 Blowing Snow: None Snow Available for Transport:
 Comments: Clouds ranged from 40-70% of sky cover, mostly cumulus humilis
AVALANCHE OBSERVATIONS
None Reported
 Comments: Observed a few
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:
Unreactive

Spatial Distribution:
Isolated
Terrain
  Primary Concern Comments: Encountered unreactive, isolated windslabs in alpine terrain. These slabs predated the most recent shot of precip.
 
Avalanche Characteristics
Character/Avalanche Problem:
Wet Loose

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Problem 2 Comments: Clouds and wind kept the problem at bay, but it seemed like there was enough free, cold snow on middle elevation solars to get there on a warm, calm day
STABILITY TESTS
 Stability Test Results:
SNOW STABILITY
 Snow Stability Rating for your observed area: Very Good Confidence: Trend:
BOTTOM LINE
 Comments: Surfaces are relatively predictable at lower and middle elevations, where an increasingly thick, aerated MFcr that formed this week overlies crusts from last week on solar aspects. On compass margins a thinner crust exists and is underlain by uncooked snow with some FC between the PP and MFcr. Shaded aspects are still cold and dry down to 7,500'. At upper elevations a mish-mash of surface conditions exist: MFcr+FC combos on more sheltered slopes, and either thin, stiff wind slabs or polished, icy surfaces in exposed terrain.