Avalanche

Grouse Rock

Avalanche.org observerCentral Sierra Nevada
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Quick report

Cracking
widespread

Touring up grouse slab, there was quite a bit of new snow. Ski pen was about 6-10in but boot pen was 20-30in. Widespread cracking both in sheltered terrain and wind loaded terrain was observed. We spoke with another group that had triggered a long running slab that broke fairly wide and ran full track. We skied a short steep roll over one at a time and triggered soft slabs from each track. As the day went on step instabilities ramped up and slabs became larger. We observed another group that had triggered a larger avalanche 8-14in deep that broke 200 ft wide. In similar terrain smaller rollovers were propagating and producing avalanches of similar depth.

Avalanche

Size
D1.5
Type
SS
Aspect
NE
Trigger
AS
Elevation
8400 ft

Several D1-1+ avalanches triggered by our party and other parties in the area. They were failing in the new snow 7-12in down.