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PROFESSIONAL OBSERVATION FORM
 Start Date: 12.19.17 Name: VandenBos Operation: SAC
 Drainage/Route:  Williams Peak Observed Terrain:  6,400-10,600 Zone/Region:  Sawtooth Mountains
WEATHER OBSERVATIONS
 HN24: HST: 1-2cm Sky: VAR Precip: S1 Temps:
 Ridgeline Wind: Moderate and Steady from the NW
 Blowing Snow: M Snow Available for Transport: Small amounts
 Comments: A brief squall between 1230 and 1400 brought 1-2cms of snow. Moderate and steady WNW winds in middle elevations started with this snowfall and continued to blow throughout the rest of the day. Ridgetop winds were strong and gusty, also blowing out of the WNW.
AVALANCHE OBSERVATIONS
None Reported
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:

Terrain
  Primary Concern Comments: More of a problem at upper than middle elevations, but with enough new snow and continued wind I would imagine it could be a problem at middle as well.
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
SNOW STABILITY
 Snow Stability Rating for your observed area: Good Confidence: Trend: Worsening