Support the forecast! Support the forecast!

Give to Friends of the Chugach National Forest Avalanche Info Center.

Avalanche: Turnagain

Location: N Side Cornbiscuit

Date:
Observer:
Route & General Observations

Up standard magnum route then down the south side across the creek and up a portion of cornbiscuit. Saw lots of sugary snow on our boot pack up cornbiscuit. We continued along the ridge for a few hundred yards and then decided to drop into a gully. It was fairly steep, but we didn’t get a slope measurement.

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 SkierAvalanche Type Soft Slab
Aspect NorthElevation 2300ft
Slope AngleunknownCrown Depth 16in
Width 30ftVertical Run 60ft
Avalanche Details

Triggered on a ski cut. Two different slabs slid simultaneously. The bottom was ~3" thick and was above facets sitting on top of an ice or melt freeze crust. Above this there was an additional 10-12" slab. I didn't look closely at it but I'd guess wind loaded snow on top of the frost layer.

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

We didn't notice anything until the slide.

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

There was a small wind lip from south to north wind above the gully.

Snow surface

Wind buff on top, not very soft, but not a crust.

Snowpack

Saw 2 separate slab and weak layer pairs. Bottom slab was ~3" deep, top ~10" deep

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.