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Avalanche: Turnagain

Location: Tincan Uptrack

Date:
Observer:
Route & General Observations

Alaska Pacific University Snow Science class did a quick tour on Tincan uptrack after road obs. Spectacular carnage from the 6″SWE storm cycle in Portage Valley and along Seward Highway Bird to Turnagain Pass.

Avalanche Details
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Trigger NaturalAvalanche Type Unknown
Aspect NorthElevation 1000ft
Slope Angle 18degCrown Depth3ft
Width 10ftVertical Run 10ft
Avalanche Details

Observed roof avalanche in action off the Johnson Pass trailhead bathroom.
Also saw some wet loosies on Seattle Ridge side.

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)?Yes
Cracking (Shooting cracks)?No
Observer Comments

Lot of new avalanches from the recent storm cycle. Worth seeing.

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

Skies cleared up towards afternoon from overcast to scattered.
No new precipitation.
Temps above freezing the whole tour.
Very light winds at 1800', otherwise calm.

Snow surface

2-8cm of gloppy new snow overnight, with distinct layer of rimed crystals in it.

Snowpack

Oh, it is spring time! Top 60cm of snow was moist and settled in.
Series of CT & ECT tests showed no results. We did not travel to areas with wind slab potential.
Ski quality was surprisingly nice.

Photos & Video
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