Avalanche: Turnagain

Location: Eddie's

Route & General Observations

Had a lovely storm tour up Eddie’s to get some hot pow laps in as well as look at the reactivity of the latest round of 3/16 buried surface hoar under this recent storm snow. We also had the goal to continue to hunt out the elusive 3/2 BSH and see where we could find it and how far down it has become. We ran into another group of 3 who reported that a natural had happened in an opening in the trees on the West slopes between their 1st and second run as well as that they had just gotten the storm slab to go on a ski cut on a steep rollover on their 3rd lap. Both ran easily on the most recently buried surface hoar which was under about 10″ of hot pow.

Avalanche Details
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Trigger NaturalRemote Trigger Unknown
Avalanche Type Soft SlabAspect West
Elevation 2000ftSlope Angleunknown
Crown Depth 10inWidthunknown
Vertical Rununknown  
Avalanche Details

Talked to 3 skiers who reported a D1 soft slab natural that ran in between their first and second laps today around 1 p.m. It sounded like storm slab on the 3/16 surface hoar.

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

Natural reported and ski cuts and skin track tests easily getting the storm slab to move on the 3/16 bsh.
Also Glide opening up on South Face of Eddie's and lots on Seattle Ridge showing their teeth.

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

Snowing S-1 at parking lot and off and on through tour, end of day raining on the track out and in parking lot by 4:30 p.m. Drove the whole pass and it was raining at road level. Viz came in and out in a variety of ping-pong, surreal light and flat out flat. Temps were warm, about 32 up top and 35 at trailhead. Calm to light winds.

Snow surface

High point of tour was 2200' and at that elevation there was about a foot of new with the consistency of hot pow or warm cream cheese. Made for great skiing until just about the alders when the glue factory began.


Dug a number of hand pits on the way up which all showed the 3/16 buried surface hoar. Dug 3 pits on South, West and North aspects at 2100' on 22 degree slope. No propagating results in any. Pits were only about 50 feet from each other and yet the height of snow ranged from 205 on the South, to 335 on West and over 400 cms on the North. Crazy. The North pit easily identified the 3/2 BSH, whereas the two other pits with more solar aspects only found tiny 1 mm near surface facets at that location. This layer ranged between 35-55 cms down. All 3 pits easily could see in the pit wall the most recently buried surface hoar from 3/16 standing up tall and proud. See my photos for the depths of the two BSHs.

Photos & Video
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