Close
PROFESSIONAL OBSERVATION FORM
 Start Date: 02.06.19 End Date: 02.06.19
 Drainage/Route:  Galena Pass: Cross, Avalanche Observed Terrain:  8500-9200, S, SE Zone/Region:  Smoky & Boulder Mountains
WEATHER OBSERVATIONS
 HN24: HST: 30 Sky: FEW Precip: Temps:
 Ridgeline Wind: Light and Steady from the N
 Blowing Snow: None Snow Available for Transport: Large amounts
AVALANCHE OBSERVATIONS
None Reported
SNOWPACK OBSERVATIONS
 HS: 110 
 Upper Pack: observed primarily solar aspects. 2-3mm FCsf already developed from overnight in some locations. stayed dry, no appreciable change from solar input on surface @1500.
@ mid elev: F/ F+ PP DF 25-30cm overlying 1mm FC on MFcr. upper elevation/ ridgelines stiffer windslab 10-15cm 1F+ with isolated collapse and shooting cracks 
 Middle Pack: N/O 
 Lower Pack: N/O 
STABILITY TESTS
 Stability Test Results: mod strength on CT with SC down 30cm on new/ old interface (slab on MFcr). no propagation on ECT. x 3
OBVIOUS SIGNS OF INSTABILITY
 Marked with checkmark if observed:
 Cracking (isolated) Depth: 10-15cm Length: 100-200cm
 Comments: ATL and on ridgelines
SNOW STABILITY
 Snow Stability Rating for your observed area: Confidence: Trend:
 Comments (aspects and elevations of instability, etc): limited on snow obs in ATL, but extrapolating from windslab obs at ridgelines suspect still CONS
BOTTOM LINE
 Comments: main question of the day for this quick tour was prevalence and sensitivity of new old interface on solar MFcr. would step out into steeper terrain BTL. status quo ATL in regard to windslab.