Valanga

Seattle Ridge

CNFAC StaffTurnagain Pass
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Quick report

Widespread avalanche activity on the back side of Seattle Ridge, including very wide propagating avalanches in Jr's, below the weather station, Main Bowl, and Warm-Up Bowl.  Many of these were natural, at least one was suspected to be triggered remotely from on top of the ridge. Some were over 1,000' wide, and most were around 1-2' deep. These likely failed on a layer of buried surface hoar that was buried by the Thanksgiving storm.

Avalanche

Size
D3 R4
Type
SS
Aspect
W
Trigger
N
Elevation
2500 ft

These most likely failed on a layer of surface hoar buried by the Thanksgiving storm. Most were natural, but one in Main Bowl was likely triggered remotely.