| Trigger | Natural | Remote Trigger | Unknown |
| Avalanche Type | Unknown | Aspect | East |
| Elevation | unknown | Slope Angle | unknown |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche: Summit
Location: Road obs to Sterling Wye
Road obs to Sterling Wye to check out the outflow wind effect.
Avalanche Details
Natural wind slabs in many of the east facing avalanche paths through Summit Lake.
Obvious signs of instability
| Recent Avalanches? | Yes |
| Collapsing (Whumphing)? | No |
| Cracking (Shooting cracks)? | No |
Observer Comments
Recent avalanches
Active wind transport
Weather
Clear
Temps in the teens to low 20s along highway.
Observed winds: Flagging off of Pyramid's northeast corner and towards God's country on the east side, very small flagging on Seattle Ridge above moto lot. Flagging in Lynx Creek. Flagging on Baird Peak in Portage.
Wx stations: Sunburst winds - westerly 5-10 mph gusts into the 20s, Summit Lake MP 45 - northwest winds in the teens gusting into the 20s, Sterling MP 37 - westerly and light.
Snow surface
Visible wind effect especially in Summit lake. Turnagain Pass was mostly spared.
Wind transport on the northeast corner of Pyramnid
Wind texture on Seattle Ridge near the uptrack
Recent avalanche on Colorado in Summit Lake
Recent avalanche on Summit Peak and noticeable wind effect.