Detailed Observation

ObserverGareth Brown

General Observations

2/20 – Stuart Creek/ Three Pigs area up to 3800’/ SCT/ Light wind/ No snow transport

Shooting Cracks: No

Collapsing: No

Avalanches: Yes,  Several very large D3 hard slab avalanches were seen on a variety of aspects.  These avalanches failed in the last few days, near the ground on the November facets.

At low elevations found a stout melt/ freeze crust up to about ~2000’.  Above that found a foot of unconsolidated snow with no wind affect.   Dug pits in two locations to get a look at snowpack structure and how sensitive the November facets are.  Pit locations were at 2500’ on an east aspect and 3800’ on a northeast aspect.  Snowpack heights were 152 and 180 cms (5-6 feet).  Both snow pits showed very poor structure with very weak snow at the bottom.  Pit results produced propagation at the ground in both locations.  At 2500’: ECTP24 down 150 cms.  At 3700’: PST 45/135 (END) down 135cms. 


Pit profiles attached.


Did not ski or travel on slopes steeper than 30°.

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Observed Avalanche Activity