Avalanche: Turnagain

Location: Seattle Ridge, Minus 3 Bowl

Route & General Observations

Noticed this slab avalanche on a short rollover in the upper section of Seattle Creek drainage, Minus 3 Bowl area. Looked to have been triggered by a snowmachine. It was difficult to tell how old it was. It was not there on Sunday Jan 5th so it could be anywhere from 1 to 3 days old.


Avalanche Details
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Trigger SnowmachinerRemote Trigger Unknown
Avalanche Type UnknownAspect Unknown
Elevation 2300ftSlope Angleunknown
Crown Depth 24inWidth 100ft
Vertical Run 40ft  
Avalanche Details

The avalanche seen was a slab that failed on buried surface hoar. We could see the feathers. Slab was around 2 feet thick. Because the roll was short it did not run far. It was around 100 feet wide. The triggered looked to have been a snowmachine from 2-4 days ago.

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

Avalanche noted was a red flag.

Photos & Video
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