March Kicks Off Our Spring Campaign- Donate Now to Support Forecasting

Observation: Highline

Observation Date
3/8/2025
Observer Name
Champion & Wilson
Region
Salt Lake » Big Cottonwood Canyon » Mineral Fork » Highline
Location Name or Route
East Mineral - Highline
Weather
Sky
Clear
Wind Direction
North
Wind Speed
Calm
Weather Comments
Beautiful bluebird day. Started off a bit cold this morning, but temperatures quickly rose throughout the day. Winds were out of the north but generally calm—no signs of transport occurring.
Snow Characteristics
New Snow Depth
17"
New Snow Density
Medium
Snow Surface Conditions
Powder
Wind Crust
Snow Characteristics Comments
About 17" of settled snow over a stiff, dirty layer. Many areas showed obvious wind texture, but the snow surface remained soft despite it. Only along the ridgelines did the surface feel noticeably stiffer. By mid-day, a thin radiation recrystallization layer was starting to form.
We went in early and exited fairly early—I’d guess the solars took a bit of a beating, as the lower elevations were damp by the time we headed out.
The small amounts of wind texture along Lower East facing Ridgeline
Notable RR - generally north facing
Red Flags
Red Flags
Recent Avalanches
Heavy Snowfall
Rapid Warming
Poor Snowpack Structure
Red Flags Comments
While today didn’t bring heavy snowfall, the days leading up to it did. This was the first real day of sunshine after the storm. In Room of Doom, the crown from Feb 7th was still visible, along with small loose snow avalanches that likely ran during the storm or peak instability. Digging in, we found small grain facets below the dust layer, along with rounding facets near the ground.
Snow Profile
Aspect
North
Elevation
8,700'
Comments
We dug a pit on a north-facing aspect at 8,700' off Highline Ridge and found an overall snow depth of about 145 cm. The upper 45 cm (approximately 17") consisted of fist-hard to 4-finger-hard new snow, primarily stellar and rimed stellar. Below that was a 1-finger-minus hardness dust layer, followed by well-preserved small grain facets. The new snow and dust layer facet interface sat atop a 1F-hard slab with rounding facets near the ground.
I was looking to see if we could get any results within the dust crust facet interface, which has caused the most issues over the last few days. We got an ECTX in our pit, and Greg—who was out in a similar zone—also got ECTX on a pit at a higher elevation. When I pried on the block, we were able to get it to fail on the small grain facets, but overall, it didn’t seem like there was enough wind loading or weight in this location.
Snow depth in Mineral seems to be improving significantly. Where we dug at 8,700', the depth was 145 cm, and at 9,000' on a north-facing aspect where we probed, it measured 200 cm—a huge improvement over the last few weeks.
The snow surface was beginning to weaken, with RR occurring during periods of sun. Curious to see which aspects hold a crust tomorrow morning, as the sun was strong and temperatures were warm.
Hand hardness and overall pit depth - NW - 8700'
The fully intact small grain facets below the dust crust layer
ECTX pit results - NW - 8700'
The old Room of Doom Crown
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
None
Coordinates