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Observation: Turnagain

Location: Tincan

Date:
Observer:
Route & General Observations

Toured to 2550′ to gather rain line info and to look at how well the storm snow is bonding to the March 27th buried surface hoar and facets and/or sun crust.

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

Roller balls in the afternoon and a few small went loose avalanches
4/4-4/6 avalanche cycle is very impressive. Large avalanche on Tincan North was also observed but no photo.

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

Partly cloudy
Center Ridge Snotel (1880) 47F @ 1 pm, Sunburst (3800') 23F @ 1 pm
Light E winds

Snow surface

Slight breakable mf crust to 1500' disappeared in afternoon.
2-30 cm of new snow over wet rain saturated snow. New snow was damp
Ski pen decreased with elevation to 5 cm at 2500'. Wind affected heavy/stiff snow.
Solar aspects were rapidly warming. Sheen present on some Easterly ridges. Runnels on slopes down low.

Snowpack

1000' Boot pen to knee. Wet snow to ground mixed with crusts.

1400' Boot pen to shin. 50 cm of wet snow over crust. Did not dig below crust. 2-4cm of damp new snow.

2000' 10 cm new snow. 5 cm wet snow, 10 cm damp snow. 25 cm of wet snow damp snow below

2550' See photo: 30 cm of new snow over 5 cm wet snow, 112 storm total (mostly 1F hardness) over March 27th intact buried surface hoar over march facets, Surface hoar was not reactive in Compression tests but was in Deep tap tests, DT 11 sudden planar x2. Did not do PST but think this layer is concerning under the stiff storm/wind slab.
Did not get high enough to determine how high it rained.

Photos & Video
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