Observation: Hatcher Pass

Location: Arkose Ridge.

Date:

January 20, 2020 4:36pm

Observer:

William Posanka

Route & General Observations

Alaska Guide Collective Avy 2 class. Skinned 2 miles up Little Su from Gold Mint TH. Climbed to 2800’ on variable wind crust, NE aspect of Arkose ridge.

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

Observer Comments

Collapsing and shooting cracks noted on wind crust along the route.

Weather & Snow Characteristics

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

Weather

Increasing clouds. Light winds out of the east in the valley. Temperature 21F.

Snow surface

Variable wind slab up to 20 cm with good facet skiing interspersed between crusts.

Snowpack

6 snow pits dug at 2800’ NE aspect.
0-20 cm pencil hardness wind slab above variable facets and crusts.
In greater than 15cm wind slab: ECTP 15 below the slab
In less than 15cm slab: ECTX

Photos & Video

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Pit profile: 140 cm total depth.

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Location

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