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CNFAIC
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Observations

Region: Turnagain, scottfennell
Location: Tincan Trees
Observer:
Date:

Route & General Observations

Standard Tincan uptrack to 2250′

Avalanche Details

Avalanche details

Trigger SkierAvalanche Type Aspect Northwest
Elevation 2200ftSlope Angle 37degCrown Depth 15in
Width 25ftLength 60ft  

Observer Comments

We came upon a skier/rider triggered avalanche, D1, soft/storm slab.

Red Flags

Obvious signs of instability

Recent Avalanches?YesCollapsing (Whumphing)?NoCracking (Shooting cracks)?Yes

Observer Comments

Snowing 1+ inches an hr.
Observed a recent skier triggered avalanche and heard a report of a rider triggering a similar pocket of storm slab on a steep roll skinner's left of the skin track near treelike.
Shooting cracks in wind loaded areas at treeline.

Weather

Weather

Obscured sky
Snowing 1+/inches per hr. = 5 inches of accumulation at the car from 11-3:30!!!
Temps in the high 20's
Moderate ENE Winds

Snow Characteristics

Snow surface

1000'-2250' 12-18" of storm snow!

Snowpack

Dug a pit @ 2200' on a SE aspect. See Photo. Predominately a right side up snowpack.
ECTX, Found the Buried Surface Hoar and Near Surface Facets above the Thanksgiving rain crust. Both were none reactive in tests. Near Surface Facets were rounding and the Buried Surface Hoar was laid over.
Shovel tilt had no results.
Hand pits in wind loaded area produced easy shears.

Photos & Video

Photos



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