Avalanche: Dutch Draw

Observer Name
Canyons Snow Safety
Observation Date
Thursday, December 17, 2015
Avalanche Date
Thursday, December 17, 2015
Region
Salt Lake » Park City Ridgeline » Dutch Draw
Location Name or Route
High Dutch
Elevation
9,800'
Aspect
Northeast
Slope Angle
37°
Trigger
Natural
Avalanche Type
Hard Slab
Avalanche Problem
Persistent Weak Layer
Weak Layer
Depth Hoar
Depth
2.5'
Width
200'
Vertical
700'
Comments
Well, we finally fulfilled the recipe for a slab avalanche. Observed some natural activity in Dutches today. SS-N-R2-D2.5-O/G in High Dutch path overnight last night. Also sympathetic releases on each side of the main path, all in pockets that face NE. Sometime around noon today SS-N-R1-D2-O/G in the goalpost area just south of conehead, with another sympathetic pocket release to the south. Impressive continuity of the weak layer and slab as evidenced by the sympathetic releases. First pics are of the overnight release, last pic is the noontime release.