| Recent Avalanches? | No |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | Yes |
Observation: Turnagain
Location: Tincan
Standard West route up Tincan to Common Bowl
Obvious signs of instability
Observer Comments
Cracking from tip of skis on steep test slope ~4 feet long
Weather
Broken skies with sun in the morning becoming overcast by early afternoon.
Calm in the morning with light NE wind in the afternoon.
No precip
Temps were in the upper 20F's
Snow surface
2-3" of new snow overnight
Snowpack
The top 25-35cm of new snow from the last two-three days felt upside down when stepping off skin track. Several hand pits failed easily within this new snow density change. We were curious about the mid-elevation crust and weak layers and dug two test pits at 2150' about 100' apart. Although the structure was poor around the NYE crust (4-5 lemons) tests results were variable. The MLK Jr facets interface was un-reactive in all tests.
Pit 1 SW aspect, 24* slope, HS=153cm
CT15, ECTN16 failed 35cm below surface on stellars and broken fragments
CT25, ECTN28 failed 45cm below surface on 3-4mm needle-like buried surface hoar
The NYE crust was ~65cm below the surface with 4F hard facets above and 1F-4F facets below (hardness varied across pit wall.) Performed two propagation saw tests: PST25/100 End above crust, and PST30/End below crust.
The MLK Jr facet interface was ~50cm below the surface
Pit 2, W aspect, HS=205cm
ECTP18 down 80cm on top of the NYE crust on 1mm facets (4F hardness), followed by an ECTX
PST30 down 85cm below NYE crust
MLK jr facet interface was 65cm below the surface
Propagation saw test in pit 1 at 2150' on SW aspect. PST30/End
3mm buried surface hoar found 45cm below the surface in pit 1. It was needle-like in shape.
Photo of hand hardness from pit 1
Pillowed wind features on SW aspect of Tincan, Hippy Bowl
Looking towards Eddies from the top of Common bowl
Looking up valley towards Kickstep