Valanga

Avalanche: Ivory Chute

Adam OKeefeSalt Lake
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Quick report

Slope Angle
41°

Avalanche

Slab Width
8 m
Weak Layer
Density Change
Trigger Type
Skier
Vertical Fall
152 m
Avalanche Type
Soft Slab
Slab Thickness
30 cm
Trigger Detail
Intentionally Triggered
Start Zone Aspect
West
Avalanche Problem
New Snow
Start Zone Elevation
3018 m

Guess my partner and I drew the unlucky card; set off the only reported avalanche in the Wasatch during the last few days of an all-aspect, all-elevation Low danger cycle. With little width in the tightly treed entrance of Ivory Chute for a proper ski cut, I did a hop turn to put pressure on the new pow layer. Aimed to see if I could get the new snow to sluff before making turns. Was surprised when a crack opened at my feet, widened, spread the width of the narrow chute, and proceeded to run full track. (Partner caught a photo of it breaking at my feet.) The remaining bed surface near the top of the chute was a firm crust ~1.5 inches deep, sugary beneath to the ground. 30 feet further down the line, the bed surface was the more expected, fully bomber snowpack as is widespread now. Good reminder that Low danger doesn't equal no danger.