Close
PROFESSIONAL OBSERVATION FORM
 Start Date: 03.03.18 Name: VandenBos, Wieland Operation: SAC
 Drainage/Route:  Couch Observed Terrain:   Zone/Region:  Soldier Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps:
 Ridgeline Wind:
 Blowing Snow: Snow Available for Transport:
 Comments: HST of 45-50cm. Thick mid-level clouds and pretty flat light. Snowing S-1 to S1 for most of the morning, tapered as we dropped elevation on the exit around 2:30 but still seemed to be snowing off and on up high. Calm to light winds picked up slightly into the afternoon with increasing snowfall intensity.
AVALANCHE OBSERVATIONS
None Reported
 Comments: Observed a small slide above the road just below Couch summit that looked to be rider triggered.
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:
Reactive

Spatial Distribution:

Terrain
  Primary Concern Comments: 
 
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Problem 2 Comments: 
STABILITY TESTS
 Stability Test Results: PST 18/100 (END), PST 30?100 (END), ECTP11, all on 2/14 interface (down 1m)
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated)    
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
 Comments (aspects and elevations of instability, etc): Upper end of considerable for the terrain that we encountered. Not hard to imagine that you'd bump up into high danger if you continued to ascend much further.
FILE ATTACHMENTS

DSC_0685.JPG
Rider triggered road cut. W aspect at 6,800' just below Couch summit

DSC_0691.JPG
Impressive cracking below roads, extending for 100's of feet.

DSC_0739.JPG
Deep enough that going downhill is tough on an 800.