Avalanche: Turnagain

Location: Tincan normal route and sunburst

Route & General Observations

Alaska Avalanche School had 12 observers on Tincan and Sunburst today. At 2250′ we found 30cm of high density new snow over the 30 cm low density snow from yesterday. Shovel tilt tests and hand shears gave easy results. The inverted density was obvious in the ski quality. Given poor visibility only one SS-N-D1 was observed.

Avalanche Details
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Trigger NaturalRemote Trigger0
Avalanche Type Soft SlabAspect West
Elevation 2400ftSlope Angleunknown
Crown DepthunknownWidthunknown
Vertical Rununknown  
Avalanche Details

We were not able to visit this avalanche and saw it in poor visiblity, but it apeared to run within the new snow, most likely at the density break from yesterday. SS-N-D-1

Red Flags
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Obvious signs of instability
Recent Avalanches?Yes
Collapsing (Whumphing)?No
Cracking (Shooting cracks)?No
Weather & Snow Characteristics
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Snow, (rain at lower evlevations) all day. Gusty winds 10-15 at timberline.

Snow surface

High density new snow


Compression tests were low strenght, CT4-12 Quality 3 at that density break. ECT tests showed no failure with the shovel basically being pounded through the soft slab. Shovel tilts and hand shears showed easy results. Stability was far better below about 1500'.