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Observer Name
CB
Observation Date
Saturday, January 28, 2023
Avalanche Date
Saturday, January 28, 2023
Region
Salt Lake » Parleys Canyon » Lambs Canyon
Location Name or Route
Lambs Canyon/I-80 Corridor
Elevation
7,300'
Aspect
North
Slope Angle
38°
Trigger
Skier
Trigger: additional info
Intentionally Triggered
Avalanche Type
Soft Slab
Avalanche Problem
Wind Drifted Snow
Weak Layer
Facets
Depth
18"
Width
150'
Vertical
300'
Comments
Approached steep wind-loaded convex roll cautiously looking for wind slab. From 25* slope remote triggered a SS-AScr-D1.5-R3-I, 38*, 30-60 cm deep x 150' wide, at 7,300' N-NE. Investigation of the crown/weak layer/bed surface determined the weak layer was a 15-20cm layer of 1mm FCsf (likely formed during the cold period early this week, I noted surface faceting/weaking during that period). Small grained FCsf may heal quickly, but also may be reactive for now. I also noted easily failing SS on 35-38* rolls in lower LCC protected N facing slopes at ~8,200' on 1/26 and suspected these to be failing on some FCsf.
Coordinates