Support the forecast! Support the forecast!

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

Avalanche: Turnagain

Location: Seattle Ridge, Minus 3 Bowl

Date:
Observer:
Route & General Observations

Noticed this slab avalanche on a short rollover in the upper section of Seattle Creek drainage, Minus 3 Bowl area. Looked to have been triggered by a snowmachine. It was difficult to tell how old it was. It was not there on Sunday Jan 5th so it could be anywhere from 1 to 3 days old.

 

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 SnowmachinerAvalanche Type Unknown
Aspect UnknownElevation 2300ft
Slope AngleunknownCrown Depth 24in
Width 100ftVertical Run 40ft
Avalanche Details

The avalanche seen was a slab that failed on buried surface hoar. We could see the feathers. Slab was around 2 feet thick. Because the roll was short it did not run far. It was around 100 feet wide. The triggered looked to have been a snowmachine from 2-4 days ago.

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

Avalanche noted was a red flag.

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.