Observation: Turnagain

Location: Lipps - Corn Biscuit

Route & General Observations

A pit on the Lipps shoulder, westerly aspect at 3300′, showed a reactive and propagating layer of
buried surface hoar. This layer is thought to be the same layer that has
been causing a number of human triggered avalanches during the past 2 weeks.

Results were:
ECTP 12 and 16 Q1
Failing in 7-10mm surface hoar buried 10-14″ deep under a stiff wind slab.

Also, we saw a few slab avalanches on the south side of Corn Biscuit. These are
thought to have been triggered April 6th or 7th by the sun warming April 5th’s 4-6″
of snow. The crown in the slab below the rocks is deeper where winds April 5th likely loaded that area.

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