Avalanche: Turnagain

Location: Main Bowl - Seattle Ridge

Route & General Observations

Remotely triggered avalanche in Main Bowl, just off Seattle Ridge. Slide was to the lookers right of the common uptrack out of main bowl back to Seattle Ridge. This is the uptrack within the bowl.
Appeared to be set off by a rider on the ridge. This slide did step down past the storm snow.

Contact, Location & General Observations
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Forecaster Comments

We have included a photo from the group that triggered the avalanche into this report. Big thanks to everyone for passing along their information!

Group involved comments: First ones in that area that day since the storm the day before. Did not see the avalanche in motion, only afterward when looking back. The group believes they would have seen it if it was already there. It was very fresh and the motors would have obscured hearing it. Also, seeing the slope from the trigger area on the ridge isn't possible. Hence, it is most likely they did remote trigger this slab.

Avalanche Details
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Trigger SnowmachinerRemote Trigger Yes
Avalanche Type UnknownAspect Northwest
Elevation 2200ftSlope Angleunknown
Crown Depth3ftWidthunknown
Vertical Rununknown  
Avalanche Details

Crown depth was 3-4 feet deep, deeper than the storm snow from the day before. This was triggered by a rider on the ridge.

Red Flags
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Observer Comments

Recent storm, lots of wind effect.

Photos & Video
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