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PROFESSIONAL OBSERVATION FORM
 Start Date: 03.10.17 Name: Wieland Operation: SAC
 Drainage/Route:  Upper Vienna Observed Terrain:  7300-9600 Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: 12-17cm HST: Sky: OVC Precip: Temps:
 Ridgeline Wind: Light from the W
 Blowing Snow: Snow Available for Transport:
 Comments: On drive at 9:30: light rain from north of ketchum to baker lot and then just a lite drizzle to 7300' just past Galena Lodge when it turned to snow. Back to rain at 7700' on Stanely side of pass to Smiley Ck. Precip ended at 10:30. Overcast most of day with a few breaks in the clouds and intense solar with thinner clouds in afternoon but they never really cleared up at Smiley Creek. Rain line up Smiley Ck appeared to be 7700'.
AVALANCHE OBSERVATIONS
 No. Location Date Size Type Trigger Aspect Elevation Comments
 1 Vienna Ck 1 N SE 8200 Steep rocky spot with which appeared to have been windloaded.
 1 Vienna Ck 1 N N 9200 Pillow below cornice.
 Several Smiley Ck Today 1 WL N SE 8700 Steep, rocky solars. Most likely happened around 1200 with a small period of solar. Lots of new rollerballs upon exit.
 1 Cabin Pk Shoulder 2 SS N SE 9600
 1 Cabin Pk 1 N E 9700 Ran mid-storm
 1 McDonald Shoulder 1 N S 9800 Very small windloaded pocket on exposed nipple.
 1 McDonald 1 N NE 9700 May have been cornice triggered
 1 Gladiator SW 9700 Decent crown, not sure when this ran.
 1 Senate Ck N 10200 Looked like loose wet? but had a very oblique viewing angle to it so not sure what is there.
 Several Hwy 75 1 WL N A few more dribbles onto the road on the Pass and near Hulen Meadows
 1 Decker N S estimated 2-3' crown under cliffs.
SNOWPACK OBSERVATIONS
 HS: 310cm 8600' on E 
 Upper Pack:  
 Middle Pack:  
 Lower Pack:  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Loose Wet

Layer/Depth:
10-20cm

Likelihood of Triggering
Sensitivity:
Touchy

Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: Pretty easy to trigger very moist/wet snow in trees in a very steep gully at 8800'. Surprised skiers on steeper SE slopes just below this hadn't triggered a thing today.
 
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:


Likelihood of Triggering
Sensitivity:


Spatial Distribution:

Terrain
  Problem 2 Comments: Like yesterday near Baker, did not find this to be a problem in here. Kicked a decent 200+ pound cornice off that just gouged into new snow off ridge. Great skiing in cirque.
 
Avalanche Characteristics
Character/Avalanche Problem:
Storm Slab

Layer/Depth:
40cm

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Isolated
Terrain
  Problem 3 Comments: ECT tests showed propagation in 2 out of 5 tests on preserved stellars/density change. I think this was isolated and healing quickly and isn't much of a concern.
STABILITY TESTS
 Stability Test Results: ECTP 18 down 40cm on PP x2. ECTN 18 down 40cm on PP x3.
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
FILE ATTACHMENTS

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