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Observation: East Mineral

Observation Date
1/16/2023
Observer Name
Gagne
Region
Salt Lake » Big Cottonwood Canyon » Mineral Fork » East Mineral
Location Name or Route
Mineral Fork
Weather
Sky
Obscured
Precipitation
Light Snowfall
Weather Comments
Snowfall began to pick up a little after noon. No wind, however we only got to 9,200'.
Snow Characteristics
New Snow Depth
16"
New Snow Density
Low
Snow Surface Conditions
Powder
Snow Characteristics Comments
Another ~5 cms overnight of low-density stellars on top of yesterday's snowfall. Storm snow has settled somewhat with 40 cms since Saturday.
HS (Height of Snow:
200 cms at 8,000'
230 cms at 9,000'
Red Flags
Red Flags
Recent Avalanches
Red Flags Comments
Several natural and human-triggered avalanches on Sunday.
Avalanche Problem #1
Problem
New Snow
Trend
Decreasing Danger
Problem #1 Comments
The density inversion which acted as the weak layer on Sunday wasn't reactive today at all, but we were able to still get clean shears down 35-40 cms on a layer of lower-density snow. This weakness should continue to heal quickly.
Comments
Overall was finding a stable snowpack in Mineral Fork below 9,200'. I was checking snow depths from 8,000 - 9,200 and they are 2+ meters which is a likely indication of a stronger snowpack. I haven't been in Mineral since early December where I was finding a thin and weak snowpack and the November facets are now underneath 1.5 - 2+ meters of snow.
I also performed lots of quick tests looking at the density inversion from Sunday which is a layer of lower-density stellars down 40 cms with a denser storm slab on top. Overall, this layer seems to have healed since yesterday with no cracking. I was still getting some clean Q1 shears at this interface, but most shears were poor quality Q2. ECTN 17 down 40 cms Q2.
I suspect most avalanche activity with this (yet another) upcoming storm will be associated with wind-loading and this should be more of an issue at the upper elevations.
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
Moderate
Coordinates