Friday's 18 skier-triggered avalanches and 10 catch and carries were primarily running as soft-slabs of wind-drifted snow on the interface between Wednesday’s and Thursday’s storms. These were also areas out of the wind zone, like on Sunset Peak’s apron, that fell more in line with storm slabs. These all are instabilities within the new snow.
Jenna Malone's ob from yesterday phrased things quite well, "(Friday)'s storm slab avalanches acted (briefly) like PWL avalanches (remote triggers, widespread connectivity, propagation of slab well uphill from the trigger), even though they were failing on the storm interface, not a persistent grain type. I'm guessing this was from the combination of new snow with a variety of grain types (DF, graupel, stellars), wind transport, and the rapid spring warming/ solar input. (On Saturday), we found decreased sensitivity in the areas we travelled, consistent with rapidly settling storm slab."
While the sensitivity of this new snow is settling out, we cannot rule out these slides today, both at upper and mid elevations, near ridgelines and mid-slope catchment features such as gullies and convex rolls. There’s also a possibility that on more sheltered northerly terrain, you’ll be able ot trigger small, dry loose slides that could knock you off your feet in the new snow. Safer riding conditions can be found on terrain out of the wind zone, and in lower-angle terrain.
A very lucky skier who went for a ride in the steep, wind-drifted terrain of Wolverine Cirque on Friday. They were lucky to only lose a ski.
