Observation: Turnagain

Location: Center Ridge

Date:

March 12, 2017 2:00pm

Observer:

Fredrik Norrsell Professional

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)?	No

Observer Comments

One collapse with weight of 8 people in close proximity, at 1250 feet elevation, SW aspect, on Center Ridge.

Weather & Snow Characteristics

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

Weather

No new, Calm

Snow surface

NSF

Snowpack

Center Ridge, SW aspect, 1250 feet, 29º slope.
Consistent failure on surface hoar 45cm down, CT12-14, Q1-2 (SP), ECTP14. From top, snow overlaying weak layer was, 15cm NSF (Fist hard), 15cm melt-freeze crust (Pencil+ hard), 15cm rounds (1 finger hard).

Similar findings in pits on sunburst at 1200 feet, W aspect. Similar findings in pits (slightly less reactive) on Tincan at 2200 feet, but rounds instead of melt-freeze layer overlaying the weak layer.

Location

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