Observation: Public
Observation Details
Name:
PitMasterObservation Date:
March 4, 2023Submitted:
March 4, 2023Zone or Region:
Snoqualmie PassActivity:
Skiing/SnowboardingLocation:
Source LakeTriggered Avalanches
Did you trigger any avalanches?
YesWas it intentional?
YesAvalanche Type:
Dry Loose (Sluff)Size:
Size 1: Relatively harmless to peopleElevation:
4200Aspect:
NEComments:
Sluff from skiing. Skier rode out to the side unharmed.Observed Avalanches
Did you observe any avalanches?
YesAvalanche Type:
Soft SlabSize:
Size 1: Relatively harmless to peopleElevation:
4100Aspect:
NEComments:
Intentional cutting at the base of cliff band. Wind slab releasing 4-6 inches deep. 15-20 feet run length.Signs of Unstable Snow
Did you see shooting cracks?
Yes, IsolatedDid you experience collapsing or whumpfing?
NoObservations
Original travel plan called for entering Great Scott Basin from Source Lake and getting eyes on Pineapple/Magnolia terrain. Crown observed between Magnolia Coulior and traverse to Bryant Coulior. After entering the basin we skied back down into Source Lake area near No Fog Bowl, greater shelter and excellent powder skiing below basin.
Pit results:
4304 feet
CTH 21 @ 66cm below surface
ECTP 21 @ 66cm below surface
(Failing on graupel layer ~10cm thick @ 66cm below surface)
Shovel shear test failed on this graupel layer.
Fist hardness down 75cm.
1 Finger hardness rest of pit.
INTERESTING:
Rounding facets @ 160cm resulted in Q1 shear SP
Media
