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PROFESSIONAL OBSERVATION FORM
 Start Date: 01.11.19 Name: Savage Operation: SAC
 Drainage/Route:  Warm Springs Ck - Baldy OB north side Observed Terrain:  8500'-9000', NW-N-NE Zone/Region:  Wood River Valley
WEATHER OBSERVATIONS
 HN24: 0 HST: 0 Sky: CLR Precip: Temps: 20s F
 Ridgeline Wind: Calm
 Blowing Snow: Prev Snow Available for Transport: Small amounts
AVALANCHE OBSERVATIONS
None Reported
SNOWPACK OBSERVATIONS
 HS: 45-65cm (see attached pit 8900' NW aspect)  
 Upper Pack: 1cm SH, 25cm PP/DF/wind-affected DF 
 Middle Pack: razor crust at 1/5 interface and FC below 
 Lower Pack: FC and DH, getting bigger (2-4mm) closer to the ground 
AVALANCHE PROBLEM ASSESSMENT
Avalanche Characteristics
Character/Avalanche Problem:
Persistent Slab

Layer/Depth:
1/5: ~25cm down

Likelihood of Triggering
Sensitivity:
Touchy

Spatial Distribution:
Widespread
Terrain
  Primary Concern Comments: 
STABILITY TESTS
 Stability Test Results: 3xECTP1, SC, 24cm (about half way down) ***I've never seen a repeatable ECTP1 before***
PSTEnd, 22/100, SC, @24cm
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Collapsing (isolated) Depth: 25cm? Length: 2m
 Comments: Only collapsing was in small wind-loaded pockets, and collapses did not appear to propagate beyond the wind-loaded areas...for now.
SNOW STABILITY
 Snow Stability Rating for your observed area: Fair Confidence: HIGH Trend:
 Comments (aspects and elevations of instability, etc): Stability was good to very good in sheltered areas where there was no slab. Stability was poor to very poor where wind-loaded. Combined, I give it a fair rating - the wind-loaded areas were very isolated.
BOTTOM LINE
 Comments: I've never seen consistent, repeatable ECTP1 scores on a persistent weak layer before today. All bets are off for what happens if this area gets a decent load next week when the high pressure breaks down. I expect this snowpack to get both unstable and tricky (remote triggers) without much additional load.
FILE ATTACHMENTS

190111_WarmSpringsCk_BaldyOB_pit_SS.jpg
Snowpit profile 8900' NW aspect.

190111_ECTP1_cardinfailurelayer.jpg
Snowpit photo following ECTP result. Crystal card is in failure layer.

190111_BaldyOB_ECTP1_slabpulledaway.jpg
ECTP result showing slab manually pulled downslope.

190111_BaldyOB_PST22-100.jpg
PST22/100 result with decent view of SH at surface.

190111_Baldy_1cmSH.jpg
1cm surface hoar - next few days of high pressure may destroy it before it get buried?