Valanga

Tam McArthur Rim

Koby YudkinCentral Cascades
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Foto dell’osservazione 1Foto dell’osservazione 2Foto dell’osservazione 3

Quick report

Cracking
specific
Collapsing
specific

Today we observed reactive windslabs above treeline. We experienced whoompfing and shooting cracks. Our two compression tests resulted in easy sudden planar fractures down 26cm in the storm snow. Our ect did not fully propagate.

Avalanche

In aiare 2 course. We belayed a skier down to trigger a windslab D1-1.5 on NNE aspect above treeline. 40cm crown approximately 70m wide.