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Avalanche: Danish Pass

Observer Name
Ryan Choi
Observation Date
Saturday, March 23, 2019
Avalanche Date
Saturday, March 23, 2019
Region
Danish Pass
Location Name or Route
Danish Pass
Elevation
8,800'
Aspect
North
Slope Angle
32°
Trigger
Skier
Trigger: additional info
Unintentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Persistent Weak Layer
Weak Layer
Surface Hoar
Depth
12"
Width
150'
Vertical
500'
Comments
The recent wet storm and barely-freezing temperatures at Tony Grove made us wary of steeper slopes today. Observed collapsing earlier in the day on a flat ridgeline E of the Bear River Divide. Did not observe any wet slides despite warmer temperatures and overcast greenhousing. Unintentionally ski triggered a slide on a N/NE facing 30-32 degree slope at ~8900'. The slide propagated below a rollover that broke 150' wide with a 1-2' deep crown and ran for 450' to the bottom of the run. The slab dropped down through two storm layers and failed on a thick layer of buried surface facets and a firm bed layer. Wet debris piled up 3-5' on the uphill side of well-spaced trees. Observed recent snowmobile tracks on similar adjacent slopes and N/NE facing obvious slide paths in the area. A good reminder that spring conditions do not equate to spring snowpack stability. 
Coordinates

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