Avalanche

Andesite peak

Blackbird Mountain GuidesCentral Sierra Nevada
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Quick report

Storm slab, D1, 100' wide, 32cm crown height, ran 100'. Not enough to bury, significantly injure or kill a person. Performed multiple snowpack tests, including 4 hand shear tests, test roll stomps before skiing the slope.

Weather

Cloud Cover
broken
Wind Loading
none
Recent Snowfall
32
Snow Avail For Transport
large amounts

Snowpack

60cm of storm snow increasing in hardness from F to 4F hard overlies the previous rain/MFcr. About half of that came last night. Very subtle signs of slab formation, but did not seem likely to propagate from tests performed. The failure layer was larger grains, 2mm stellars and other forms. We got easy to moderate sudden planar compression test results 32cm down, but extended column test results were ECTN-11. Was not able to get propagation anywhere on extended column tests or test roll stomps.

Avalanche

Size
D1
Aspect
E
Trigger
AS
Elevation
8200 ft