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PROFESSIONAL OBSERVATION FORM
 Start Date: 03.03.19
 Drainage/Route:  Owl Creek Observed Terrain:  7000-9000. all aspects Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps: -5
 Ridgeline Wind: Calm
 Blowing Snow: Snow Available for Transport:
 Comments: clear and calm. lots of solar input.
AVALANCHE OBSERVATIONS
 No. Location Date Size Type Trigger Aspect Elevation Comments
 1 cerro ciento 3.5 HS N S 10000 -> 8000 not sure if previously observed. would be obscured from hwy 75. easily visible from owl ck ridgelines. similar aspect, but bit smaller in scope than south galena / cherry ck. but plenty interesting. extrapolating to map estimate 1000ft wide, ran 2K vert, linear mile. crown poorly visualized from distance
 multiple above SLWR hospital Yesterday 1 WL N SW 6000 multiple wet loose seen on sw aspects across 75 when I left hospital this am.
 multiple south slopes Owl ck Today 1 WL N S 7000-8000 watched multiple develop during day on south slopes. thin, likely running on first of two surface crusts noted in my obs from spring ck
 Comments: no deep slab failures seen looking into upper prairie (west fork) or Saviers complex. evidence of multiple smaller dry loose mid storm cycles.
SNOWPACK OBSERVATIONS
 HS: 230cm @ 7900, 70 (NE),  
 Upper Pack: 230- 150 cm : F - 4f PP/ DF. new old interface down 80cm (@150cm) was LOC #1 in PST 
 Middle Pack: 150- 80cm : 1f RG . interface at 80cm was LOC #2 evaled in PST 
 Lower Pack: 80-0cm : 4f 2mm FC, basal a bit bigger but wetter.  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Deep Persistent Slab

Layer/Depth:
down 1.5m

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Specific
Terrain
  Primary Concern Comments: i've seen structure all aspects hi, mid. hard to pin down. but first time with (perhaps) increasing PST scores
 
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Specific
Terrain
  Problem 2 Comments: 
STABILITY TESTS
 Stability Test Results: ECTN easy down 15-20cm on storm interfaces. couldn't touch my LOC's
#1 PST 80/100end down 80cm 1mm FC on new old #2 PST 60/100end down 80cm 1mm FC on new old
#3 PST 70/100end down 150cm 2mm FC (12/8?) #4 PST 80/100 arr down 150cm (but irregularity in cut block)
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
BOTTOM LINE
 Comments: not trying to be one to outsmart uncertainty. Big Slides loom large in this zone . . but first time I've had higher scores on deeper PWL. If anyone else is up for deep pit spelunking in the next week, I'd be curious to see if these scores are replicable and can help establish a reassuring trend.
Less windslab than expected, good snow holding away from solars, felt comfortable skiing mid 30's