Avalanche: Turnagain

Location: Seattle Ridge - Road side and Main Bowl (1st Bowl)

Route & General Observations

Several snowmachine triggered avalanches along Seattle Ridge. Around 20″ of new snow from overnight, more than expected. Very little to no wind effect on new snow along ridge.

Photos and information passed to the avy center by Travis Smith. Also, thanks to this crew for clearing off the weather station!

Avalanche Details
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Trigger SnowmachinerRemote Trigger Yes
Avalanche Type Soft SlabAspect Unknown
ElevationunknownSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
Avalanche Details

Multiple remotely triggered slab avalanches today reported from Seattle Ridge by snowmachiners. These were all around 2' deep and on all aspects and between 2,000 and 2,500'. Suspected weak layer is the 1/10 Buried Surface Hoar. No one known to have been caught. Riders reported that it was very easy to trigger avalanches today and they did not venture into higher terrain.

In the afternoon in the parking lot, this group witnessed what is thought to be a natural avalanche and powder cloud off Seattle Ridge to the looker's left of the up-track. No crown was seen afterward, possibly a loose snow avalanche.

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

New snowfall and easily triggering avalanches in the trees.

Photos & Video
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