Public Observation
Observation Details
Observation Date:
January 27, 2021Submitted:
January 27, 2021Zone or Region:
Brundage Out of BoundsActivity:
Skiing/SnowboardingLocation:
SargentsTriggered Avalanches
Did you trigger any avalanches?
YesWas it intentional?
NoAvalanche Type:
Soft SlabSize:
Size 1: Relatively harmless to peopleElevation:
Below TLAspect:
WComments:
Very tender layer below tree line and within the new storm snow. Pockets of snow on rollovers and steeper features were reactive to ski cuts on all aspects but not running very far. Widespread cracking and whumpfing observed.Photo:
Observed Avalanches
Did you observe any avalanches?
YesAvalanche Type:
Soft SlabSize:
Size 2: Could bury, injure, or kill a personElevation:
7600Aspect:
NComments:
North side of Brundage Mountain (aka Sargents) slid naturally during the storm cycle - 12 inches deep x 100 wide. Rapid wind loading was observed at the ridge tops.Signs of Unstable Snow
Did you see shooting cracks?
Yes, WidespreadDid you experience collapsing or whumpfing?
Yes, WidespreadObservations
Two observed avalanche problems:
1) Wind slab at and near tree line on north and cross loaded slopes. Widespread natural activity observed that was large enough to bury a person.
2) Below tree line on all aspects and within the new snow, there was a layer that was very reactive to ski cuts and prone to sympathetic releases. Generally, small isolated pockets that were not large enough to bury a person.