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ADVANCED OBSERVATION FORM
 Start Date: 12.31.17
 Drainage/Route:  Pilot Peak - Summit and Lamar Creeks drainages Observed Terrain:  6000 to 8000, N, E, S aspects Zone/Region:  Mores Creek
WEATHER OBSERVATIONS
 HN24: 0 HST: 0 Sky: CLR Precip: Temps: -9 to -2
 Ridgeline Wind: Calm
 Blowing Snow: Snow Available for Transport: Small amounts
AVALANCHE OBSERVATIONS
None Reported
SNOWPACK OBSERVATIONS
 HS: 75-85 cm 
 Upper Pack: 3 cms above a thin rain crust capping a 25 cm thick Fist-to-4F slab undermined by 9-10 cm weak layer consisting of 2.3 mm facets. Thin crust between slab and weak layer, 
 Middle Pack:  
 Lower Pack:  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
25

Likelihood of Triggering
Sensitivity:
Touchy

Spatial Distribution:
Widespread
Where did you find this problem?
  Primary Concern Comments: 
STABILITY TESTS
 Stability Test Results: Stability Tests continues to be consistent. Same results since December 25, December 27, December 30th.
CTMQ1(SC), ECTP6, CPST25/90(end). Video of tests at https://vimeo.com/249303213
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (widespread)   Length: +40 m
 Collapsing (widespread) Depth: 25  
 Comments: Experienced significant collapse at an upper Pilot Peak bowl with an Easterly aspect.Cracking across the slope in excess of 40 meters. Slope angle was 28 degrees did not enable it to slide. Another big-big collapse after skier felt on a 30-degree slope NE aspect slope.
SNOW STABILITY
 Snow Stability Rating for your observed area: Poor Confidence: HIGH Trend: Steady
BOTTOM LINE
 Comments: Stability tests are providing evidence of instability, widespread snowpack with structural weakness favoring propagation, cracking and collapses continue BUT no natural releases. Slopes are waiting for triggers. Yesterday I tried to tickle the avi demon at two starting zones ... from the sides ... but retreated after I was not successful to initiate failure from a safe location. Meanwhile, snowmobilers and skiers are staying off from steep slopes at MCS.