Observation: Brighton Perimeter

Observation Date
1/28/2025
Observer Name
AAI Pro 1
Region
Salt Lake » Big Cottonwood Canyon » Brighton Perimeter
Location Name or Route
Brighton Perimeter
Weather
Sky
Clear
Wind Direction
East
Wind Speed
Light
Weather Comments
Moderate east winds this AM cross-loading N and NW ridges winds tapered through the morning.
Snow Characteristics
New Snow Depth
4"
New Snow Density
Low
Snow Surface Conditions
Powder
Faceted Loose
Wind Crust
Melt-Freeze Crust
Snow Characteristics Comments
Variable. Solar aspects crust. Polar aspects mostly shallow powder outside of wind-affected areas, some breakable wind board too.
Red Flags
Red Flags
Recent Avalanches
Wind Loading
Red Flags Comments
Small, shallow recent avalanches on wind-drifted slopes.
Avalanche Problem #1
Problem
Wind Drifted Snow
Trend
Same
Problem #1 Comments
Triggered small but notably sensitive fresh wind drifts on cross-loaded slopes. Generally shallow 4-8" deep and D1. A small cross-loaded pillow was intentionally triggered while descending the slopes adjacent to Mount Tuscarora and Lake Mary Chutes.
Avalanche Problem #2
Problem
Persistent Weak Layer
Trend
Decreasing Danger
Problem #2 Comments
Since recent avalanche activity has diminished on the facet layer near the ground we wanted to dig and assess the hardness of the layer and the grain type to document. Snow profile is attached below. We dug high near Wolverine Bowl where HS was ~140cm. ECTX and basal facet layer 1F hard. Lower in the drainage HS ~150cm, ECTX and basal facet layer 1F+ and rounding facets. Attention is more focused on the surface snow and facet distribution. Shallow, low-density surface snow is faceting and sits above a layer of firm snow.
Snow Profile
Aspect
North
Elevation
10,100'
Slope Angle
29°
Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
None
Coordinates