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PROFESSIONAL OBSERVATION FORM
 Start Date: 02.19.19 End Date: 02.19.19 Name: VandenBos (off duty) Operation: SAC
 Drainage/Route:  Solar Persistent Slabs Observed Terrain:   Zone/Region:  
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps:
 Ridgeline Wind:
 Blowing Snow: Snow Available for Transport:
AVALANCHE OBSERVATIONS
None Reported
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:
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
BOTTOM LINE
 Comments: Evidence of avalanche activity continues to point to the potential for a budding persistent slab problem associated with the 2/2 interface. At this point, it seems like we need pretty specific slope characteristics (>35 degree SE-S-SW) for this problem to bloom, but that could change with the forecasted loading. Certainly something to keep in mind while traveling/route planning. Note that the weak layer involved in most of these slides was not directly verified.
FILE ATTACHMENTS

IMG_3570.jpg
Verlins SE-aspect 8,800'

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East Fk SE-aspect 8,900'

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Horton SW-aspect 9,400'

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Galena Peak SSW-aspect 8,100'

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W Fk E Fk Salmon River S-aspect 10,000'

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W Fk E Fk Salmon River S-aspect 9,500'