Avalanche: Turnagain

Location: Goldpan - avalanche

Route & General Observations
Skier triggered avalanche in Goldpan at Turnagain Pass. Skier was able to ski off slab. A larger avalanche was sympathetically triggered by this one on an adjacent slope.
Contact, Location & General Observations
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Forecaster Comments

Big thanks to Mike for writing in.

This is a very scary set up for the high elevation terrain that had older snow under the 3 or more feet of settled storm snow from Nov 9th. Note this avalanche was at 4,000' in elevation.

Avalanche Details
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Trigger SkierRemote Trigger Unknown
Avalanche Type UnknownAspect West
Elevation 4000ftSlope Angleunknown
Crown Depth3ftWidth 300ft
Vertical Run 1000ft  
Avalanche Details

Skier triggered avalanche by the second skier on the slope. Avalanche broke at skier's feet who successfully skied off the slab. West aspect - initial slide did not extend to the south aspect side of chute, 4000 ft ASL, ~100 cm (3') deep, ~100 ft wide possibly constrained by terrain, ~300 ft long although below that had previously slid during the storm, debris ran 1000 vert feet to valley floor.

The more terrifying component was the larger sympathetic release on the next west aspect around the corner. Bed surfaces of both slides appeared to be old snow at the ground. The major rumbling and wind blast seemed too big for the initial slide which was clarified upon seeing the large sympathetic.

After that did not feel there was a safe way to investigate the Goldpan starting zones and egressed via Bertha Creek. Similar non-propagating pit results at lower elevations as reported by other groups.

Photos & Video
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