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PROFESSIONAL OBSERVATION FORM
 Start Date: 01.01.18 Name: VandenBos Operation: SAC
 Drainage/Route:  Upper Fishhook Observed Terrain:  6,400-9,100' Zone/Region:  Sawtooth Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: FEW Precip: Temps:
 Ridgeline Wind: Moderate and Intermittent from the NW
 Blowing Snow: L Snow Available for Transport: Small amounts
AVALANCHE OBSERVATIONS
None Reported
 Comments: Observed about a dozen significant avalanches on most aspects of middle and upper elevations in the Fishhook drainage. Also observed a large slide on the east aspect McDonald peak that I'm pretty certain was not present yesterday.
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Primary Concern Comments: 
STABILITY TESTS
 Stability Test Results:
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Collapsing (isolated)    
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
FILE ATTACHMENTS

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E/ENE aspect on McDonald. This one was fresh failed between ~noon on Sunday and 11:00am on Monday

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E aspect off S ridge of Limbert @ 9,400'.

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E aspect off S ridge of Baron @ 9,800'.

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NE aspect off SE ridge of Tohobit @ 8,900'.

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S aspect below S face Limbert @ 8,600'.

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N aspect below N face Horstmann @ 8,300'.