Observation Date
12/2/2022
Observer Name
Alden and Zanetti
Region
Salt Lake » Big Cottonwood Canyon » Silver Fork
Location Name or Route
Lower Silver Fork
Comments
Stuck our shovels into the snow on a NW aspect at 8100' and found a number of concerning problems with the current snowpack structure The persistent weak layer is very weak (fist) and composed of large, well developed facets with some buried surface hoar at this wind sheltered location.
An Extended Column Test failed on the third tap from the wrist and collapsed roughly half the column without propagation (ECTN3 Q2 @48cm). ECTN was observed opposed to a collapse propagating across the whole column presumably due to the relatively weak (fist to 4 finger) cohesiveness of the slab (see Avalanche Problem #1 notes above). A shovel shear test produced similar results, failing with minimal pressure on the same layer of large (1-2mm), sugary facets (STE Q2 @48cm).
Video
Today's Observed Danger Rating
High
Tomorrows Estimated Danger Rating
Considerable
Coordinates