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PROFESSIONAL OBSERVATION FORM
 Start Date: 03.02.18 Name: VandenBos, Wieland Operation: SAC
 Drainage/Route:  Senate/Gladiator Observed Terrain:  7,100-8,500' Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: 55cm Sky: Precip: Temps:
 Ridgeline Wind:
 Blowing Snow: Snow Available for Transport:
 Comments: Skies clearing into the late afternoon but still some high stratus moving through near sunset. 55cm new snow.
AVALANCHE OBSERVATIONS
None Reported
 Comments: Far too many to list individually (several dozen). Prominent cycle at lower and middle elevations in the Smokys was evident during the drive north. Many open meadows had persistent slab-style crowns of varying depths. Observed crowns on the eastern half of the compass but suspect that if we had views of the western half of the compass we would have been seeing activity there as well. Similar crowns were evident at lower and middle elevations in the Boulders, in addition to a number of quite large crowns at upper elevations.
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Primary Concern Comments: Based on appearance of crowns, many avalanches seemed to be failing on our persistent weak layers. Observed a number of fairly deep crowns in non-wind loaded terrain in the Smokys but need to actually visit crowns to verify culprit weak layers. From a forecast perspective, persistent slabs are our primary concerns in the longer term. Storm/wind slabs remain a concern, but looking forward these will likely be somewhat short lived and less of a problem than our persisting persistent weak layers.
 
Avalanche Characteristics
Character/Avalanche Problem:
Storm Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Problem 2 Comments: 
STABILITY TESTS
 Stability Test Results:
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend: