Observation: Brighton Perimeter

Observation Date
3/31/2025
Observer Name
Champion
Region
Salt Lake » Big Cottonwood Canyon » Brighton Perimeter
Location Name or Route
Hidden Canyon
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Direction
Southwest
Wind Speed
Moderate
Weather Comments
It initially started as a greybird day, with overcast skies and light to moderate SW winds transporting snow along the ridgelines. Around 1 PM, light precipitation began, falling mostly as graupel.
Snow Characteristics
Snow Surface Conditions
Wind Crust
Melt-Freeze Crust
Snow Characteristics Comments
A mix of snow surfaces in the backcountry—while I’m sure pockets of lingering cold snow exist, most of what I saw was either wind-affected or just a trace sitting atop a firm melt-freeze crust. Wind texture was obvious across both upper and mid-elevations, noticeable in appearance and the hollow feel underfoot.
Throughout the day, graupel continued falling, beginning to pool in spots like old ski tracks and tree wells.
Many south facing aspects along ridgelines are dirt.
Wind textured surface
Graupel collecting
Graupel beginning to pool in old wind scoures
Red Flags
Red Flags
Wind Loading
Red Flags Comments
Primary concern today was the wind drifted snow
Avalanche Problem #1
Problem
Wind Drifted Snow
Trend
Increasing Danger
Problem #1 Comments
Winds actively transported snow throughout the day as precipitation began to fall. Beneath this weekend’s new snow and wind-drifted slabs sits a supportable melt-freeze crust.
Shallow, widespread cracking was easy to initiate, and I was able to kick off thin wind skins ranging from 1–4". In areas with more drifting, I broke off a chunk closer to 6". While these were overall shallow, they were sensitive, and with continued loading and increasing snowfall, this hazard will grow.
In loaded, consequential terrain features, even a small slide could knock someone off their feet. Otherwise, I couldn’t get any lingering dry snow to move, and the elevated winds seemed to keep the surface cool.
Shallow surface cracking 1-2" deep on the melt freeze crust
Deeper chunk able to break off in a wind laoded zone - Hidden Canyon - 6-7" deep
Shallow wind skin - NW aspect - Hidden Canyon.
Comments
10,420 southerly aspects dirt
Today's Observed Danger Rating
Low
Tomorrows Estimated Danger Rating
None
Coordinates