Avalanche: Hatcher Pass

Location: Pinnacle

Date:

November 18, 2017 1:00pm

Observer:

Jed Workman Professional

Route & General Observations

Climbed and skied to 5300′

Avalanche Details

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Trigger	Skier	Remote Trigger	0
Avalanche Type	Soft Slab	Aspect	East
Elevation	5000ft	Slope Angle	38deg
Crown Depth	5in	Width	15ft
Vertical Run	20ft

Avalanche Details

SS-ASc-R1D1-I
old wind slab/persistent slab over NSF
Stubborn to trigger, small in size, mod-strong strength, poor structure, low energy, low propagation

Red Flags

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Obvious signs of instability

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

Observer Comments

No other avalanches observed today, one very similar to today's mentioned here observed yesterday
No whumphing
Localized cracking

Weather & Snow Characteristics

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Weather

-11c @ 4.5k', Clear, Calm

Snow surface

Old wind loading and wind slabs
NSF

Snowpack

1 meter HS @ 5.2k' on West Aspect
Only 1 MF crust near base of snowpack sitting on 10cm of weak facets. No other crusts (likely above rain line)

Photos & Video

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Webfoot Cooly

Location

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