| Trigger | Natural | Remote Trigger | No |
| Avalanche Type | Glide | Aspect | South Southeast |
| Elevation | 3100ft | Slope Angle | unknown |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Turnagain
Location: Cornbiscuit Alder Line West
Wooded uptrack to alder glades then exit alder glades to road.
Avalanche Details
Recent glide avalanche below Seattle Ridge on motorized side. Also noted shallow storm releases on the same aspects.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | Yes |
| Cracking (Shooting cracks)? | No |
Observer Comments
One very localized small whumph at ~ 1400' otherwise no obvious traveling red flags. Light flagging showing snow transport off the top of Magnum to the north. Recent glide avalanche on Seattle Ridge side(see photo) as well as shallow (mid storm?) releases that did not run far off S to SE aspects.
Weather
Clearing trend mid morning with fog layer in and out. Then increasing high clouds and increasing snowfall in the afternoon. Light to moderate winds observed at ridgetop as evidenced by snow transport to north aspects.
Snow surface
Crust with 1cm moist snow on the surface at and above the road. Crust rapidly disappeared at 1400' to become soft snow surface above that.
Snowpack
See attached snow profile for new snow stratigraphy at ~1900'. The new snow seemed to be gaining strength rapidly with snow pack tests showing low energy shears and low propagation potential. Buried surface hoar was variable but generally observed between 30cm to 55cm down and not very reactive. Thanksgiving crust was observed between 100-170cm and still showing propagation potential (PST65/160cmEnd) but did not feel super uniform nor weak at this location.
Seattle Ridge from Cornbiscuit; recent glide avalanche on the right and shallow storm release to the left.
Cornbiscuit Flank Snowpit