Avalanche: Hatcher Pass

Location: Marmot

Date:

November 17, 2017 4:00pm

Observer:

Jed Workman Professional

Route & General Observations

Ascend Marmot from fishhook lot, descend/ascend rae wallace, descend SW Marmot from top

Avalanche Details

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Trigger	Skier	Remote Trigger	0
Avalanche Type	Soft Slab	Aspect	North Northwest
Elevation	4500ft	Slope Angle	46deg
Crown Depth	5in	Width	15ft
Vertical Run	20ft

Avalanche Details

Estimated size and slope angle. We did not witness, but pretty certain it happened today.
Rae Wallace

Red Flags

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Obvious signs of instability

Recent Avalanches?	Yes
Collapsing (Whumphing)?	No
Cracking (Shooting cracks)?	No

Observer Comments

Small wind slab avalanche, SS-ASu?-R1D1-I on Rae Wallace, see other notes

Weather & Snow Characteristics

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

Weather

Calm, -9C, Clear

Snow surface

NSF top ~10cm
Soft slab 10-15cm over NSF
1-6" New snow faceting

Snowpack

Multiple pits today studying wind slab, mid and basal weak layers.
See attached pit.
Strong strength, poor structure, low energy, high friction, low propagation

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Marmot Profile

Location

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