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Observations

Region: Turnagain
Location: Corn Biscuit
Observer:
Date:

Route & General Observations

Toured up the Corn Biscuit NW ridge and descended the Westerly aspect near the very large glide crack.

Red Flags

Obvious signs of instability

Recent Avalanches?YesCollapsing (Whumphing)?NoCracking (Shooting cracks)?No

Observer Comments

Skier triggered shallow wind slab in Superbowl. The slab looked to have been small (6-10" thick) but propagated around 75'. Essentially a long wind pillow that was very short in width - wind loaded area just on the lee side of the ridge. The slab entrained a moderate amount of sluff on the descent and ran ~ 300'.

Sluffs in the 4-6" of loose snow on steep slopes - moderate volume

Weather

Weather

Clear skies, light variable winds, Temperatures in the upper 20's F.

Snow Characteristics

Snow surface

Thin breakable crust up to 1,600', 4-6" of soft settled powder above this. Winds have affected some upper elevation zones - wind texture could be seen just off ridgelines.

Snowpack

Other than the surface instabilities (shallow wind slab slabs and sluffs composed of the 6" of snow Friday) the snowpack below is stable. The glide cracks remain large we all as cornices.

Photos & Video

Photos



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