Observation: Turnagain

Location: Seattle Creek

Date:

February 17, 2018 10:20pm

Observer:

Mike Records

Route & General Observations

Skied various aspects and elevations in the Main Bowl zone. Lots of good snow (and ptarmigan) once back a bit from Seattle Ridge proper. While skinning back up experienced widespread and repeated collapsing and cracking. Skintrack continued to collapse on second lap. Brought to mind the recent Silvertip avalanche. Pit in area of most widespread collapsing:

Elevation: 1,500 ft
Aspect: W
Slope Angle: 30 degrees
HS: 215 cm
HP: 130 cm
ECTN12, CT11 Q2 @20 cm on BSH
ECTP19, CT12 Q1 @50 cm on BSH and facets above hard crust
Concrete for snow below 50 cm

Failure layers should be visible in attached picture.

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

Weather & Snow Characteristics

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Snow surface

decomposing surface hoar

Photos & Video

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Snow pit

Location

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