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Avalanche: Turnagain

Location: Tincan Common

Date:
Observer:
Route & General Observations

Standard Uptrack towards Tincan Common plateau at 3,100 ft.
Intentions to see level of wind gusts, recent storm snow and observe recent slide on Common’s face.
No whumphing, no shooting cracks, rollers after 1pm within direct sunlight (southern Aspect) and lots of 1/2 to 1 ft wind slabs on terrain greater than 35°
Skied down skintrack due to instability and recent storm snow

Avalanche Details
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Trigger SkierAvalanche Type Soft Slab
Aspect South SouthwestElevationunknown
Slope Angle 37degCrown Depth 20in
WidthunknownVertical Run 10ft
Avalanche Details

Slab was initiated on a common rollover that many skiers go fast over to maintain speed towards lower skin track.
Slab had a shallow runout and skiers did not look back to see propagation.
Width was approximately 20 ft (flank to flank)

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

Wind loading, storm slab, recent avalanches, rollers in direct sunlight on south facing aspects

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

Light clouds, 25°-30°F, wind around 5-15 mph, with gusts at Tincan Common at 40-50 mph lasting 10-40 seconds. Approximately 10-15” of new storm snow

Snow surface

10-15 inches of new storm snow

Snowpack

Ski Test with storm snow slabs,
CT 25 Q2 at 60cm- 3,150 ft. Southern Aspect
ECTP 29 Q2 at 45cm - 3,150 ft, Southern Aspect

Photos & Video
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