Observation: Turnagain

Location: Tincan to 2300'

Route & General Observations

Tincan normal uptrack to 2300′

Late morning precipitation stopped, winds decreased into the 20’s mph and sky’s partially cleared. Visibility was good for a few hours to get a good look around Turnagain Pass for recent avalanche activity following the last 5 days of stormy weather.

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)?Yes
Observer Comments

We saw several large D2 crowns on Lipps, N side of Sunburst and debris on Seattle Ridge. See Road Obs for pictures.

At 2000' the snow surface became more affected by recent winds and cracking was present on steep test slopes. *sustained ridgetop winds averaging in the 70's and gusting over 100mph on Sunburst from 11pm to 4am.

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

Skies were broken
Winds - 10-20mph
No new precip while we were on Tincan, but observed scattered rain showers from Eddies to Girdwood on the drive home.

Snow surface

1000' - Rain crust on surface with 10+ inches of saturated wet snow below
1500' - Thin rain crust 1" thick that disappears by 1850' (10" of new snow below that is dry and low density
2000-2300' - Pockets of wind affected snow; ski penatration was 8-15"


1400' - 1850' - 10" of new snow below the thin rain crust on surface is dry and low density (fist hard.) Below this layer is damp snow from 12/29 storm

Pit at 2300' SW aspect, HS=165, Test results: CT12, CT14, ECTN16 - top 10" of new snow, Thanksgiving rain crust was 120cm deep w rounding facets just above. Dec. 20-23 Near Surface Facets had 60cm of new snow on top. Both were 4F+ hard, but were not reactive in this pit.

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.