Observation: Public
Observation Details
Name:
VinnyObservation Date:
December 29, 2022Submitted:
December 29, 2022Zone or Region:
Snoqualmie PassActivity:
Skiing/SnowboardingLocation:
Snoqualmie Pass/Source LakeTriggered Avalanches
Did you trigger any avalanches?
YesWas it intentional?
NoAvalanche Type:
Soft SlabSize:
Size 1: Relatively harmless to peopleElevation:
4100Aspect:
NComments:
D1 (D0.8?) avalanche triggered at approximately 4100 ft in the source lake zone, at treeline in wind protected area. Start zone 40+ deg. Broader slope 35+ deg. Snow was soft storm slab, not wind affected. 5m x 5m zone broke aproximately 15-20 cm down to Christmas crust. Avalanche was triggered when skier dropped over small cliff band (2 m of vertical drop) and impacted small start zone for this D1. Skiier also caught tip on buried rock/root and fell on top of slide, sliding about 3-5m downhill on top of moving snow before gently coming to rest. No rescue/no burial/no injury. Local, short (2-4m) running sluffs also observed on steeper drop-ins in windprotected areas.Signs of Unstable Snow
None reported
Observations
Large (1-1.5m diameter), deep (entirety of snowpack, to rock) holes were also observed in the middle of some of the common runouts. Early season hazards are absolutely still present.
Also see comments on D1 size break triggered above.