Avalanche: Summit

Location: North End Summit

Route & General Observations

Summit North. Strong winds. Wind transported snow. Glide cracks. Settling. Shooting cracks. Collapsing.

Avalanche Details
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Trigger UnknownRemote Trigger Yes
Avalanche Type Hard SlabAspect Southwest
Elevation 2500ftSlope Angle 30deg
Crown Depth 20inWidth 150ft
Vertical Run 500ft  
Avalanche Details

Natural and remote triggered slides observed 12/7 afternoon. Skier remote triggered pocket on a wind affected "nose" Limited horizontal propagation. Ran 400-500 ft on October crust. Failure appeared to be on the facet farm above the crust.

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Obvious signs of instability
Recent Avalanches?Yes
Collapsing (Whumphing)?Yes
Cracking (Shooting cracks)?Yes
Observer Comments

Recent slides up to D3 observed. Numerous collapses on shallow, low angle slopes. Human triggered shooting cracks. Settled collapses and cracking widespread and not present 12/5.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.

29* overcast, light precip, steady wind 5-10. Strong gusts and heavy down sloping winds in channeled terrain

Snow surface

New snow. Right side up. Forming cohesive slab just above the Halloween facets.


20 to 50 inches average depending on location. All hasty pits failed on the facets. No formal pits.

Photos & Video
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