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Surface slabs near Three Fingered Jack

Location Name
Flanks of Three Fingered Jack -- NE Aspect
Region
Santiam Pass Area (including Three Finger Jack)
Name
Garry Sanders
Email Address
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Position
Public
Date and time of avalanche (best estimate if unknown)
Red Flags
Recent loading by new snow, wind, or rain
Obvious avalanche path
Avalanche Type
Loose/Point-Release
Blowing Snow
No
Trigger type
Skier
Wind Speed
Calm
Slope
40degrees
Air temperature
Above Freezing
Aspect
Northeast
Air temperature trend
Warming
Elevation
6000ft.
Bed Surface
Storm Snow
Cloud Cover
25% of the sky covered by clouds
Weak Layer
Storm Snow
Crown Height
1 ft
Avalanche Width
15ft.
Avalanche Length
25ft.
Terrain
Below Treeline
More detailed information about the avalanche

 This avalanche fractured on a rollover on a steeper NE aspect.  We anticipated a possible fracture so we had one skier ski cut across the top of the rollover.  Our planned route was to ski around this area and drop down a treed ridge.  The skier triggered a surface slab that appeared to be all new storm snow, less than 1 ft. in height.  We noticed some older cornice breaks in the area but we did not see any signs of natural activity.