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Observation: Mineral Fork

Observation Date
1/5/2025
Observer Name
Meisenheimer / Hardesty
Region
Salt Lake » Big Cottonwood Canyon » Mineral Fork
Location Name or Route
Mineral Fork
Weather
Sky
Overcast
Wind Speed
Calm
Weather Comments
Light winds. Light rime. The cloud deck was above 9,000'.
Snow Characteristics
New Snow Depth
12"
New Snow Density
Low
Snow Surface Conditions
Powder
Faceted Loose
Rain-Rime Crust
Snow Characteristics Comments
Soft powder all on aspects and elevations.
Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Wind Loading
Cracking
Collapsing
Poor Snowpack Structure
Red Flags Comments
All checked
Avalanche Problem #1
Problem
Persistent Weak Layer
Problem #1 Comments
The snowpack changed dramatically as we climbed from 7,000' to 8,000'. Below about 7,500 ', the "Christmas" warm-up was very prevalent. This crust (temperature or rime) had roughly 30 cm / 12 inches of snow above. In most snowpits and test slopes, we found this layer to be nonreactive, and it would take a large load to break it deeper. I felt very comfortable below about 7,500'.
However, above about 7,500', the snowpack had dry loose faceted snow at the base, and it woke up like a roaring dragon pissed off. Every 100', we felt a significant collapse that would rumble meadows. It felt like waves of whoomphs. Large and booming, collapsing on almost every 10th step.

Personal note:
It's super simple. We have a weak, faceted base with a heavier load on top. We traveled like it was HIGH danger and bailed when it got steeper and more committing.
Please, please, do not be lured into avalanche terrain right now. The snow was surfy, and it was the first real turn of the season for us. We drooled and told stories of us riding the steep terrain and how sick it would be. But, it was razor thin, and a turn too far, right or left, could end in tragedy. It's not worth it. We kept it tight and avoided avalanche terrain (greater than 30°.) I love riding steep powder like the next person. BUT, I am telling you this isn't the season. If you want to ride steep terrain head somewhere else where they don't have faceted snow (Canada?)
If you live here like me, ride low-angle terrain and learn to love and enjoy the day. It's not always about the steep. I rode with my 67-year-old dad and Drew Hardesty today. The stories were all the time, and the smiles were miles wide even though we never stepped foot into avalanche terrain. It was 100% one of the best days I've had this season. It's okay to surf low-angle love and come home every day. There will be a time for steep lines. It's not now. "DO NOT MESS WITH FACETS" - Kobernik, aka KOW.
Stay Safe, backcountry community. Love you all.
- Trent
Video
Higher up, around 8,600', we found dry snow with two prevalent layers. One layer down about 12" (Christmas warm-up), and the faceted snow at the base of the snowpack. Our first ECT failed on isolation. The second failed in the upper 20s. I don't like that score, as we likely already collapsed this slope, and the ECT scores should be ignored. The collapsing should trump all test scores. It was clear that it was dangerous.
On this slope, we collapsed the snowpack, opening up a large crack. I was surprised we didn't trigger this steeper slope. We definitely didn't walk out to inspect it.
Today's Observed Danger Rating
High
Tomorrows Estimated Danger Rating
Considerable
Coordinates