Avalanche

Pio Yurt/Peanut

Preuss, VandenBosGalena Summit & Eastern Mtns
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Observation photo 1Observation photo 2Observation photo 3

Quick report

Collapsing
isolated

We encountered rain at the summer trailhead, transitioning to snow with increasing elevation. The upper snowpack was wet, with shallow ski penetration. We observed a limited number of collapses, and snowpack tests produced easy to moderate failures. We observed recent D2 sized avalanches within the last 12 hours and debris piles/filled in crowns from days ago.

Weather

Cloud Cover
overcast
Snow Avail For Transport
small smounts

Snow through the morning with brief periods of visibility.

Snowpack

We dug in two different locations, one near the yurt and one higher on Peanut (see photos below). Both locations had similar make up of the recent crusts plaguing the snowpack. Two large column tests failed with moderate hits (11+13) on the sun crust which formed on the break in storms of the 12/20 down 45cm and a third on the 12/15 interface with 14 hits. CPST 18/100 END on the Late Nov Crust with facets above it (12/5). The higher up pit showed similar results with propagation on the Late Nov. Crusts down 100cm with 15 and 23 hits. The facets were dry and 6-10cm thick layer. We didn't hear any collapses on the tour. At the Pio study plot, the snow stake measured 103 cm. The SWE collection bucket was overflowing, totaling 3.86″ since 11/12/25. Some loss of sample volume is likely due to overflow; the bucket was replaced with a 2.0 double-stack configuration to better capture SWE during extended storm cycles.

Avalanche

Size
D2
Count
5
Aspect
N
Trigger
N
Elevation
8700 ft