Support the forecast! Support the forecast!

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

Observation: Turnagain

Location: Tincan to 3150'

Date:
Observer:
Route & General Observations

Ascended normal skin track to 3150′ above Common Bowl

uptrack

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

Several new glide releases: Pyramid N shoulder, Twentymile - SW aspect, Portage - SW aspect, Penguin - SW aspect - almost reached the bike path, Crow Creek - meadows (SW aspect,) Seattle Ridge (SE) aspect

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

Sky was obscure
Temps - 40F's along Hwy, ~30F at 3100'
Rain/snow line ~2500
Winds NE 10-20mph

Snow surface

1000' - 2" wet snow on supportable crust (boot pen varied from 12" to thigh high)
2000' - 4" wet snow on supportable crust (boot pen ~8")
3000' - 1cm surface crust on 10" wet snow on firm crust

Snowpack

Pit at 3150' -SW aspect, 29*slope, HS=335cm, Pit height=90cm, Ski/boot pen=10cm/25cm, Tests: ECTP17, ECTP23 RP failed on 4F density m/f and dry rounds 50cm below surface. Interface was not smooth/clean, but layer did fail suddenly. These test results showed propagation potential, but due to the stout K hard (7cm crust above) it would require a large amount of force to trigger this layer, or the 7cm crust would have to loose its strength.

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.