Avalanche: Summit

Location: North End Summit

Date:

December 7, 2021 3:00pm

Observer:

Mr. Savoona

Route & General Observations

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

Avalanche Details

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Trigger	Unknown	Remote Trigger	Yes
Avalanche Type	Hard Slab	Aspect	Southwest
Elevation	2500ft	Slope Angle	30deg
Crown Depth	20in	Width	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

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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

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Weather

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.

Snowpack

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

Photos & Video

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Location

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