Valanga

Avalanche: Central Wood Camp Bowls

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Foto dell’osservazione 1

Quick report

Slope Angle
39°

Avalanche

Weak Layer
Facets
Trigger Type
Natural
Vertical Fall
610 m
Avalanche Type
Soft Slab
Slab Thickness
91 cm
Start Zone Aspect
East
Avalanche Problem
Persistent Weak Layer
Start Zone Elevation
2591 m

On my way way up Logan Canyon on 12-15-19, I could see a several large recent natural avalanches in the NE---S facing Wood Camp Bowls. The complex of significant natural activity featured avalanches 2' to 3' deep and hundreds of feet wide, running around 2000 vrt' in a common gully down to an elevation of 6500'. The avalanches failed on a thin persistent weak layer comprised of sugary faceted snow, above a melt-freeze crust and the stout layer from the moist Thanksgiving storm.

I was able to take a couple photos from the TH on 12-17-19, and realized the extent of the natural avalanche activity from the weekend. The photos are of the crown of a large slab avalanche which likely occurred late Saturday. You can also see evidence of an older avalanche in upper Ham Hollow. Only a small pocket pulled out of the adjacent slope to the south called "Torch Light Parade"

We visited the site on 12-18-19, made it up to the crown, and were able to size things up. The debris and bed surface were covered by a few inches of snow from late in the storm and has now become very weak and sugary. It was difficult to climb the steep avalanche path because it was like trying to move up through very loose sand, "sand boxing"