Surface Hoar, Near Surface Facets, And Crusts

CB Avalanche Center2015-16 Observations

Location: Paradise Divide Area
Date of Observation: 11/09/2015
Name: Nick Schley
Subject Surface Hoar, Near Surface Facets, And Crusts
Elevation: 9,000-12,000ft

Avalanches: One R2, D1, Avalanche on Augusta’s NE arm, Crown height ~30cm appeared to release in a mid storm layer, did not inspect crown interface. Probably 3-5 days old.
Weather: Cool, Clear, Gorgeous before 11:00 am.
Snowpack: SE-S-SW slopes below 11,500 all held thick pencil hard crusts from this weekends sun. Those crusts were topped by small near surface facets and 2-3mm tall surface hoar crystals. HS around 60cm primarily sitting on ground not previous Oct snow.
NE-N Persistent slabs lurk. Probing revealed HS to be between 90cm and 130cm above 10,500. Two pits yesterday revealed right side up pack until a quick shift from 1F hard storm slab to 10cm of fist hard basal facets. Did a fair bit of traveling on these aspects today, did not experience any settlements. Small near surface facets developing here. Ski pen 10-15cm.