Summit central, tanner’s pass traverse to powerline cut between central and hyak.
Signs of Unstable Snow
We traveled on piste at silver fir and xc trails to surveyors lake. Off piste found 8-15” of medium to high new density snow. Touring onto new snow produced no whoompfing, cracks, sudden collapse or drum sounds, but produced wet leather couch squeaking sounds. Snowfall was variable in intensity from 1500h - 1630h with dippin dots at 2800’, and clumping well structured flakes above 3700’. We avoided slopes of +30 slopes based on Avaluator score of +3 av; +2 terrain and +hand shear results on aspect we intended to ski. Skiing was boot depth vichyssoise over crust. We descended part of the powerline cut, then over to xc and on piste.
Observed Avalanche Problem #1:
Powerline cut between central and hyak. ESE aspect at 3600’ ~40 deg. Hand shear produced fracture at 38cm across block with modest force on a layer of grainy snow. Quick profile in hand shear pit found variable density across the layer. Ski pole tests also found variable density across the area of travel. Top layer decreased in density above 3800’ up to surveyors lake at 4000’. We avoided slopes of +30 on descent.