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Observation: Neffs

Observation Date
1/28/2023
Observer Name
PDiegel
Region
Salt Lake » Neffs
Location Name or Route
Neffs Canyon
Red Flags
Red Flags
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Comments
Dug 4 hasty pits at about 9070 ft; 2 NW facing and 2 N facing. One N facing was in a deeper snowpack area (deeper than my 125 cm pole could reach, the other in a thin area (~1m deep). Both NW facing failed easily with a slab over a clean shear about 60 cm below the surface and about 25 cm loose storm snow on the surface. I couldn't get the N facing columns to fail - they just fell apart. I was not on a major ridgeline and windloading was minimal.
The firm slab and clean easy shear on the 2 NW coloumns were disconcerting, but we saw no evidence of cracking, collapsing, or avalanche activity aside from benign sluffing on steeper slopes. We saw some very steep and bold lines below a major ridge line being ridden. Not sure what to conclude - there be dragons, but they were not active where we were.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate