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PROFESSIONAL OBSERVATION FORM
 Start Date: 02.24.18 Name: Savage Operation: SAC
 Drainage/Route:  Lola Ck/Cape Horn Ck Observed Terrain:  6500-7900, S-E-N-NW (no westerly) Zone/Region:  Sawtooth Mountains
WEATHER OBSERVATIONS
 HN24: 3-8cm HST: Sky: X Precip: S1 Temps: 12-18F
 Ridgeline Wind: Light
 Blowing Snow: None Snow Available for Transport: Small amounts
 Comments: I and the models blew the weather forecast...much less snow and wind than forecast today.
AVALANCHE OBSERVATIONS
None Reported
SNOWPACK OBSERVATIONS
 HS: short recreational trip - no probing, but pole probes showed fairly dense snowpack > 1m from the beginning 
 Upper Pack: solars: 3-8cm PP, then 1-2cm DF, then radiation recrystalization crust with nice FC above and below (going to be a problem when loaded), then DF for 15-20cm down to 1-3cm thick P/K hard 2/14 crust+FC layer...some aspects/elevations had a razor rain/temp crust a few cm above the 2/14 crust
shady: 3-8cm PP, then about 20-30cm DF down to thin FC layer with more subtle 2/14 crust at most middle and lower elevations 
 Middle Pack: DF and RG but not observed too far below the 2/14 layer 
 Lower Pack: Not observed  
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
20-40cm

Likelihood of Triggering
Sensitivity:
Not Observed

Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: 
 Comments: Isolated collapsing (I'm pretty sure it was on 2/14 layer) but not propagating very far. I wasn't in avalanche terrain.
STABILITY TESTS
 Stability Test Results: None performed.
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Collapsing (isolated) Depth: 20-40cm Length: 2-4m
 Comments: Collapsing only on solar side of the ridge (mostly SE).
SNOW STABILITY
 Snow Stability Rating for your observed area: Good Confidence: HIGH Trend:
BOTTOM LINE
 Comments: Not enough recent loading to overload the crust+facets in the upper 1-2 feet of the snowpack. Both the crust+facets buried on Valentines Day and the layer of facets that formed yesterday/were buried today look like they will be issues when loaded. I got some glimpses of upper elevations, and it looked like there was significantly more recent snowfall (big orographic effect).