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PROFESSIONAL OBSERVATION FORM
 Start Date: 03.03.18 End Date: 03.03.18
 Drainage/Route:  Copper Observed Terrain:  6700-8900, all aspects Zone/Region:  Sawtooth Mountains
WEATHER OBSERVATIONS
 HN24: HST: Sky: Precip: Temps:
 Ridgeline Wind:
 Blowing Snow: Snow Available for Transport:
 Comments: broken but mostly cloudy with sun breaks both days. intermittent but rare squalls s1-2 at times. 3-5cm of HN24 from tour on 3/3 to todays. all wind effect from storm event. no appreciable overnight
AVALANCHE OBSERVATIONS
None Reported
 Comments: surprisingly none. one small cornice break on true N off copper summit which did not propagate windslab or step down. given cornice development and signs of wind expected more windslab activity.
SNOWPACK OBSERVATIONS
 HS: 115-120 on S aspects above 8000, deepest 300cm at 8700' NE aspect 
 Upper Pack: variable depending on exposure to wind. SW, S ridges almost scoured clean leaving 5-10cm windpack/ windslab. mixed forms MF crusts below.
north aspects sheltered or lee found 30-50cm PP/DF F.
significant settlement cones 10-15cm between 3/3 -3/4 
 Middle Pack: 2/14 now 85 down on solars, as deep at 120 on lee and north.  
 Lower Pack: N/O 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
85 - 120

Likelihood of Triggering
Sensitivity:
Stubborn

Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: given destructive potential still primary concern, but in this zone no failures and unimpressive results
 Comments: developing some pretty impressive cornices
STABILITY TESTS
 Stability Test Results: CTM to H and Bkn in storm snow.
ECTN (at high strength) or ECTX at all deeper LOC
on 2/14 : PST > 50 end x 1 on NE aspect, arr x2 on SE, SW
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
 Comments (aspects and elevations of instability, etc): no concerning findings on two days of looking about, but not stepping on steeper terrain.
BOTTOM LINE
 Comments: surprised by lack of hard signs of instability. not yet convinced to step into steeper terrain > low 30's as I'd like more time and more obs on a tricky to predict a problem with big destructive potential. perhaps less water weight and prior set up really making the difference as first few days for me in Copper this season or , better yet, perhaps first set of data points showing a pattern of improvement.
FILE ATTACHMENTS

IMG_2744.JPG
slabs and cornices getting big, but staying put.

IMG_2745.JPG
slabs and cornices getting big, but staying put.