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Observation: Diving Board

Observation Date
12/30/2020
Observer Name
mark white
Region
Salt Lake » Big Cottonwood Canyon » Broads Fork » Diving Board
Location Name or Route
Diving Board, Broads Fork
Weather
Sky
Clear
Weather Comments
A little warmer today with clear skies in the am increasing clouds in the afternoon.
Snow Characteristics
Snow Surface Conditions
Powder
Wind Crust
Snow Characteristics Comments
Most all of the upper elevations slopes in upper Broads Fork were heavily wind jacked, including, E-NE facing Bonkers, The Diving Board, Blue Ice, and W-NW facing Big West, it also appeared that N facing Dromedary and Sunset were also wind damaged.
Red Flags
Red Flags
Recent Avalanches
Cracking
Collapsing
Poor Snowpack Structure
Comments
Went back to Broads Fork today not knowing what the E winds had done in the upper drainage, as I mentioned before the wind had its way with the snow. My tracks from Christmas Day on Bonkers were raised and scoured and the E-NE facing slopes like Bonkers, The Diving Board and the Blue Ice were all heavily wind damaged as well as the W-NW facing Big West and the N facing slopes of Dromedary and Sunset. The snow was inconsistent and variable with a few soft spots, then some breakable wind crust and some hard windboard thrown in for good measure. Headed to the Diving Board for a closer look, got multiple collapses and cracking walking on the undisturbed snow between Bonkers and the Diving Board.
Snow depths vary from place to place, 18 inches in one place, 30 inches 20ft away on the same slope. The only thing that's not variable is the poor snowpack structure, with a pile of large grain facets
underlying a slab with, some decomposing crusts of various thicknesses, now capped of with wind crusts and more wind slabs. The surface of the snow is already faceting with one clear cold night last night and will continue to facet and weaken. I did note one new avalanche on the NE facing of Bonkers that I put on the avy list, looked like wind loading on weak faceted snow was the culprit.
photos: abundant facets and wind damages
Hazards a tuff call right now, seeing a natural avalanche is telling me that it's still considerable in high elevation steep wind loaded slopes on the N end of the compass, moderate in most other terrain.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates