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Observation: Turnagain

Location: Tincan to 3400'

Date:
Observer:
Route & General Observations

Normal Tincan route to Common Bowl

Good visibility to see recent avalanche activity from the Jan.27-28 storm. Seattle Ridge had a large D3 wet avalanche on the East Face just South of the motorized lot and several gullies had new debris. Todd’s Bowl, CFR, Eddies, Wolverine, Library, Tincan, Elevator Shaft- D2 wind slabs that released mid to late storm. Could also see debris on the SW aspect in Peterson Creek. Many new glide avalanche on Seattle Ridge, Eddies -NE & SW face, Wolverine, Cornbiscuit and Skookum. See Glide obs from Jan.29th for photos.

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

Glide Cracks are actively moving with many new releases - see Turnagain Glide obs from Jan.29

Did not see any other current signs of instability in the snowpack.

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

Partly Sunny with fog at times
Mid 20's F at 3000'
Calm winds
No new precip

Snow surface

1000-1550' - Crust was forming throughout the day with clear skies and cooler temps. At 1000' the crust was breakable in the morning, but by 4pm was almost fully supportable. Crust becomes thin by 1400' and eventually disappears by 1550'
Above 1550' - 12" to 20" new snow as you gain elevation

Snowpack

We observed a settling snowpack with good stability. As temps were cooling throughout the day a crust was forming on the surface below 1500'. New storm snow appears to be bonding well. We ski cut and stomped on some test slopes along the ridge above common bowl and could not get any snow to move and no shooting cracks.

Dug a quick pit at 2200' - Height of snow was deeper than 3 meter probe. Found 14" of new snow sitting on 6" of moist snow. All new snow was Fist Hard and was sitting a right-side-up snowpack below. Test results: CTN

Photos & Video
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