Avalanche: 4th Sister Ridge, low

Observer Name
anonymous
Observation Date
Thursday, January 21, 2010
Avalanche Date
Thursday, January 21, 2010
Region
Logan » Logan River » Cottonwood » 4th Sister Ridge, low
Location Name or Route
Elevation
8,000'
Aspect
North
Slope Angle
35°
Trigger
Snowboarder
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Hard Slab
Weak Layer
Facets
Depth
2'
Width
100'
Vertical
200'
Caught
1
Carried
1
Comments

Rider was ascending a skin track on a split board when avalanche released above him...The avalanche caught the tails of his boards and engulfed him, but he was able to grab hold of a stump in the descent and hold on while the bulk of the moving snow rolled past him... rider was carried around 70' down the slope.

Very experienced but fairly large party triggered 2 avalanches on adjacent slopes. One person caught and carried in second avalanche.

Comments

Rider was ascending a skin track on a split board when avalanche released above him...The avalanche caught the tails of his boards and engulfed him, but he was able to grab hold of a stump in the descent and hold on while the bulk of the moving snow rolled past him... rider was carried around 70' down the slope.

"The 3rd pic is the one that carried me, you can see my pole at the top log where it swept me in by the tails of my boards. I grabbed the log and it pulled me away. I also grabbed at the lower debris as it passed with little success to hold on. It did slow me down enough to slide out to the edge. My other pole was at the bottom on top of the debris pile."

Comments

The party decided to ascend the path of the first avalanche, which became problematic....

Comments

Here's a view of the crown and bed surface of one of the two avalanches....

Coordinates