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ADVANCED OBSERVATION FORM
 Start Date: 12.19.18
 Drainage/Route:  Galena Pass, Tweener on cross Observed Terrain:  8500 feet, NE, 20 degree slope Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: SCT Precip: Temps:
 Ridgeline Wind: Extreme and Steady from the W
 Blowing Snow: M Snow Available for Transport: Large amounts
 Comments: West wind was producing Large banners were


Extreme west winds were producing banners on high alpine ridges.
AVALANCHE OBSERVATIONS
 No. Location Date Size Type Trigger Aspect Elevation Comments
 1 Galena Peak Today 3 U N SW 10000feet SS-N-R2D3-U
 Comments: Above Link to SWAG avalanche codes does not work. Most likely a wind slab from additional snow loading from extreme west winds on alpine ridges
SNOWPACK OBSERVATIONS
 HS: 87cm 
 Upper Pack: 35cm of PP 
 Middle Pack: 38 of DF 
 Lower Pack: Entire snowpack is sitting on 14cm of FC 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Deep Persistent Slab

Layer/Depth:
8cm

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Specific
Where did you find this problem?
  Primary Concern Comments: CT14@8cmQ1
 
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
52cm

Likelihood of Triggering
Sensitivity:
Reactive

Spatial Distribution:
Specific
Where did you find this problem?
  Problem 2 Comments: ECTN7@57cm
 
Avalanche Characteristics
Character/Avalanche Problem:
Dry Loose

Layer/Depth:
70cm

Likelihood of Triggering
Sensitivity:
Reactive

Spatial Distribution:
Specific
Where did you find this problem?
  Problem 3 Comments: CT4@70cmQ3
STABILITY TESTS
 Stability Test Results: CT4@70cm,Q3
CT14@8cm,Q1
ECTN7@57cm
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
 Collapsing (isolated)    
 Comments: Wumphing was obersved skinning in untracked area with shooting cracks<5meters, collapsing was observed in established skin track on NE aspect
SNOW STABILITY
 Snow Stability Rating for your observed area: Fair Confidence: MODERATE Trend: Steady
BOTTOM LINE
 Comments: 35cm of new snow is sitting on surface hoar. The entire snowpack is resting on basal facets and additional loading could cause a naval he that rips to the ground.
FILE ATTACHMENTS

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