| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Observation: Turnagain
Location: Corn Biscuit
Standard West Ridge route
Obvious signs of instability
Observer Comments
Recent cornice fall along Magnum's South face and a recent glide avalanche in Lynx Creek drainage
Weather
Clear
Inversion -2F at road increasing to around 20F at ridge top
calm winds
No new precip
Snow surface
thin candy shell crust to around 1000'
surface hoar varied in size, 1cm valley bottom becoming 2-3mm to ridge tops.
*between 2700'-3000' surface hoar was tiny ~1mm
Snowpack
Pit#1 - 2000', HS=135cm, N aspect, 24* slope - snow was right side up and very stable in this location. We found a MF crust on the ground that was moist and bonded to the ground with P-hard rounding grains above. Tests:CTN
Pit#2 - 2300', HS=82cm, S aspect, 25* slope - we probed throughout this location and could feel crust/facet/crust sandwich in the bottom 20-40cm of the snowpack. We intentionally dug in a shallow area to test this structure with a thinner slab on top. The height of snow varied from 270cm to 60cm, and averaged around 175cm. Tests: CT24, ECTX, ECTP19 and failed 50cm below surface just below a 1cm MF crust on 1mm rounding facets. See pit photo for more info.
At 1600' HS ~ 100cm
At 2700' HS ~ 160cm
Glide avalanche on an East aspect in Lynx Cr drainage
Recent cornice fall triggered small windslab and loose snow below on SW face of Magnum, also not glide cracks below rocks
Recent cornice fall triggered small windslab and loose snow below on SW face of Magnum, also not glide cracks below rocks
3mm surface hoar on loose snow at 3000'
old storm slabs on Seattle Ridge East aspect
Old wind slab on Seattle Ridge SE aspect
Pit #1 at 2000' on a N aspect of Corn Biscuit
Pit #2 at 3200' on a S aspect of Corn Biscuit