Observation: Brighton Perimeter

Observation Date
3/13/2026
Observer Name
Maushund & Champion
Region
Salt Lake » Big Cottonwood Canyon » Brighton Perimeter
Location Name or Route
Hidden Canyon
Weather
Sky
Few
Wind Direction
Northwest
Wind Speed
Light
Weather Comments
Light to moderate NW winds made the bright blue sunny day a bit chillier up high than my flip flops in the parking lot would suggest. Exiting before 12:30, icy surfaces on the lower 2/3 of the mountain on solar aspects were just starting to soften.
Snow Characteristics
Snow Surface Conditions
Dense Loose
Faceted Loose
Wind Crust
Melt-Freeze Crust
Damp
Avalanche Problem #1
Problem
Wet Snow
Problem #1 Comments

Snow surfaces on solar aspects were warming by the time we exited the field around 12:30, but due to the solid refreeze last night, this just made for decent skiing. We did not observe solar slopes during the heat of the day. Across BCC, many lower and mid-elevation solar slopes have melted out to dirt and brush.

Solar Coverage

Avalanche Problem #2
Problem
Persistent Weak Layer
Problem #2 Comments

While the strong over weak structure still exists (see photo), the reactivity of the January facets (DJL) has trended to unlikely. On a N aspect near 9710', in an area of Hidden Canyon that was away from tracks, we found a snowpack depth of 150cm; a 65cm mostly progressively well-settled slab of F to 4F snow (including a MFcr), sat over top the January facets. The January facets were generally still intact, and there was not a noticeable or supportable crust above the facets. No other signs of instability noted.

While the PWL is dormant and human-triggered avalanches are unlikely on this layer. However, weak structures like these aren't usually paired with the upcoming temperature increase next week. In fact, we looked back and the last time we experienced something along these lines: weak, faceted structure with a large warm up was in 2004. As temperatures rise with this structure, we will be concerned—and have substantial uncertainty—around if the PWL will "wake back up" and release wet slabs. Something to chew on as you move toward planning your next week...

General snowpack structure at upper elevation northerlies - supportable slab atop of faceted grains

Comments

Photos:

#1: Soft surfaces could still be found on sheltered northerlies.

Today's Observed Danger Rating
Moderate
Coordinates