Avalanche: Turnagain

Location: Twin Peaks

Route & General Observations

Addition to Mark Norquist’s detailed observation (his party saw the slide from the top and got a look at the crown).

Avalanche Details
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Trigger SkierRemote Trigger0
Avalanche Type Soft SlabAspect East
Elevation 3300ftSlope Angle 37deg
Crown Depth 15inWidth 1000ft
Vertical Run 2000ft  
Avalanche Details

Slab broke between the two of us in our party during the 9th and 10th pass of the day on the skin track, likely from a thin spot. Skier #1 stood atop the slab. Skier #2 was able to arrest on the bed surface almost immediately.
We quickly descended to verify that the other three skiers previously in the area (who we began the day with and left the zone before us) had successfully exited.
Our earlier ski partners had seen the crown from near the parking lot. Two returned to the area while the third drove for help if needed.

Red Flags
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Observer Comments

No obvious signs of instability observed during tour.

Weather & Snow Characteristics
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Light breeze. ~0-10'F

Snow surface

Slight wind effect (skin) in areas on week-old settled powder. Crust down low.


No formal stability tests. Several hand pits, shovel sheer, and rudimentary search for buried surface hoar.

Photos & Video
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