Avalanche

Near Purches Creek

Peterson, Rogers
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Observation photo 1Observation photo 2Observation photo 3Observation photo 4Observation photo 5Observation photo 6Observation photo 7Observation photo 8Observation photo 9Observation photo 10

Quick report

Today felt like the definition of variable snow. We found stiff, barely edgeable wind crusts, breakable crusts, hot pow (wetted facets), and dry recycled powder. We were able to initiate small facets sluffs on a northwest-facing slope. These were very small, but on a nearby slope we saw a larger (D1) facet sluff a rider-triggered while ski-cutting the slope. 

By 3:30, solar slopes had become wet but showed no signs of instability. 

Weather

Cloud Cover
few
Wind Loading
none
Snow Avail For Transport
none

Mostly sunny skies and mild temperatures. By the afternoon, calm winds had become light from the south and southwest.

Snowpack

Surfaces were a mixture of refrozen wet snow, cold dry facets, and wind crusts. We found little to no stout old wind slabs along the way. We found soft, faceted snow on a northwest-facing slope that was more protected from the wind. On the other side of the compass, we found thin refrozen crusts on south and southeasterly slopes. The upper ~10 cm of the snowpack had become wet by 3:30 PM. Below the upper 10 cm of the snowpack, we found thin ice lenses developing below the wetted snow. 

Avalanche

We saw several old avalanches that either occurred during strong winds near the end of March or over the last few days from warm temperatures (Wet loose in the rocks). Of note was a small sluff that a skier triggered sometime over the last week. See Photos.