Avalanche: Summit

Location: Tenderfoot

Route & General Observations

Toured to 3300′ on Tenderfoot, skied 3 laps on a SW aspect in 2-12″ of powder without incident. We observed a recent large natural on the W face of Butch, as well as numerous older naturals predating the recent storm.

Avalanche Details
If this is an avalanche observation, click yes below and fill in the form as best as you can. If people were involved, please provide details.
Trigger UnknownRemote Trigger Unknown
Avalanche Type UnknownAspect Unknown
ElevationunknownSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
Avalanche Details

Observed a recent natural slab on the West face of Butch, propagating ~700' wide and running ~1500'. It likely occurred during the last storm, picture attached below.

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

Large natural avalanche seen on Butch Pk.

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

Variable on the ridge, mix of powder and wind skin below.


Pits on a W aspect at 2640' showed 35cm of right side up storm snow over a thin melt-freeze crust. A thin layer of facets below the melt-freeze crust yielded an ECTN23 and CT30 Q2. We found no concerning results between two ECT's and one CT, although recent avalanches suggest deep instabilities exist across Summit Pass.

Photos & Video
Please upload photos below. Maximum of 5 megabytes per image. Click here for help on resizing images. If you are having trouble uploading please email images separately to staff.