Valanga

Upper Blue Lake

Travis FeistCentral Sierra Nevada
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Quick report

Cracking
isolated

Upon leaving the Hope Valley sno-park, it was immediately obvious that there was significant recent and current wind transport occuring. Wind exposed features had large plumes of blowing snow and snow surfaces had wind blown textures. We saw two very recent wind slab avalanches (~2 hours), and one slightly older (~8 hours). Wind loaded test slopes produced minor cracking. In the afternoon, sunny slopes were getting wet and dense on the surface. A broken a-arm shifted our focus from weather, snowpack, and avalanche obs to making a successful a self evac.

Avalanches observed and minor cracking on wind loaded test slopes

Weather

Cloud Cover
few
Wind Loading
intense
Snow Avail For Transport
large amounts

Wind loading was intense in the morning, then dropped to moderate in the afternoon. Cloud cover increased in the afternoon

Snowpack

Cold, low density new snow on the surface, with significant wind loading 

Avalanche

Size
D2
Count
2
Aspect
NE
Trigger
N
Elevation
8900 ft