Close
PROFESSIONAL OBSERVATION FORM
 Start Date: 03.16.17 Name: Wieland Operation: SAC
 Drainage/Route:  Galena Pk shoulder Observed Terrain:  7200-10500 Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: 16cm HST: 16cm Sky: VAR Precip: Temps:
 Ridgeline Wind: Strong from the W
 Blowing Snow: M Snow Available for Transport: Small amounts
 Comments: Clouds were in and out during tour. Brief period of sun in AM but never really had much direct solar. Was socked in around 10,700 on tour. Graupel falling on drive to pass at 1:30. About an 3cm of new slop at Galena lodge transitioning to 16cm on ascent shoulder. Wind had blown a little prior to tour but really picked up at transition to alpine on descent.
AVALANCHE OBSERVATIONS
 No. Location Date Size Type Trigger Aspect Elevation Comments
 Comments: A few dribbles onto highway off steep rocks on Ketchum side of pass.
SNOWPACK OBSERVATIONS
 HS: n/o 
 Upper Pack: @ 9700'. Top few cm's were moist on south but dry on NW/W aspects in trees. Transitioned to moist surface snow at ~9000 on shaded. Breakable crust below HST made skiing difficult on steep W. Nothing wanted to start moving when trying to push moister snow on steep slopes @8600. 
 Middle Pack: n/o 
 Lower Pack: n/o 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Wind Slab

Layer/Depth:
3/15

Likelihood of Triggering
Sensitivity:
Touchy

Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: Many ridgetop and typical cross-loaded features were being loaded with wind.
 
Avalanche Characteristics
Character/Avalanche Problem:
Loose Wet

Layer/Depth:


Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:

Terrain
  Problem 2 Comments: Did not see any new activity while glassing southern Boulders but suspect little fresh snow was in there. Areas near the pass did not see substantial sun so nothing went off during my tour.
STABILITY TESTS
 Stability Test Results:
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
 Comments (aspects and elevations of instability, etc): Perhaps on the light end of CON but wasn't a day to be messing with alpine wind slabs. MOD at middle and lower with no wind loading.