Region: Turnagain
Location: Eddies Mtn, west face, just above tree line--first big convex roller to the right of skin track

Avalanche Details

Avalanche details

Trigger NaturalAvalanche Type Aspect West Southwest
Elevation 2100ftSlope Angle 34degCrown Depthunknown
Width 125ftLength 250ft  

Observer Comments

Huge slab. 5-6 ft deep at crown. The whole mountain shook with what sounded like a cannon blast. The snow under me ( flat spot 1/4 mile away) went "WHOOOMF" and vibrated for a minute or so. I went down towards the noise since I saw two skiers heading that way earlier and discovered ski tracks heading into the avalanche. It looked like the whole face ripped off. I turned my beacon to search and scanned the debris field. I failed to receive a signal. At the bottom run-out I found two sets of ski tracks leaving and proceeding in classic "s-turn" fashion. This leads me to believe that the avalanche was not triggered by skiers but just happened to go in the same spot(even if it was just 10-20 minutes afterwards). The avalanche was on a convex roll over, on one of the first snow fields above tree line right of the skin track (skiers left). The avalanche happened where the snow was transitioning between slush/crud and powder.

Red Flags

Obvious signs of instability

Recent Avalanches?YesCollapsing (Whumphing)?YesCracking (Shooting cracks)?No



Warm, "t-shirt" weather (45 degrees F?)

Snow Characteristics

Snow surface

The avalanche occurred between the new feeling powder and some heavier slush/crud. The snow on this (WNW) aspect was very heavy and sounded much different (sloshy) than the (NNW) aspect that I was doing laps on.


I dug a snow pit on the NNW aspect below the jagged peak on Eddies. I found some instabilities at around 2ft down but could not get it to trigger in a column test (even jumped on it). I did not dig down to the length of the 5-6 ft of the avalanche that occurred on the WNW aspect so I don't know if the persistent slab exists there too.

Photos & Video


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