Observation: Patsy Trees

Observation Date
2/25/2026
Observer Name
Gagne
Region
Salt Lake » Little Cottonwood Canyon » Grizzly Gulch » Patsy Trees
Location Name or Route
Grizzly Gulch / Twin Lakes Pass / Patsey Marley
Weather
Sky
Obscured
Precipitation
Light Rain
Wind Direction
West
Wind Speed
Light
Weather Comments
Gusty westerly winds along ridge tops.
Snow Characteristics
New Snow Depth
4"
New Snow Density
High
Snow Surface Conditions
Damp
Snow Characteristics Comments

Icky. Damp snow below 9,500' with slightly drier snow above that elevation.

Red Flags
Red Flags
Recent Avalanches
Collapsing
Poor Snowpack Structure
Red Flags Comments
An additional red flag: rain on snow.
Comments

Wandered up Grizzly Gulch this morning to get a sense of how the snowpack was handling the nearly 2" of water with some wind-loading.

Quite a difference above and below the ~9,200' rain/snow line:

- At or below the rain/snow line, I was seeing damp grains down ~90 cms from the snow surface, including the faceted Dry January Layer (DJL). ECTN23 on the DJL

- Above the rain/snow line, the top ~20 cms of the snowpack was damp, with dry snow underneath, including the DJL. The ~75 cm storm slab from last week is moving toward pencil-hardness, with a weaker, F-hard layer of facets at the DJL. Despite this strong-over-weak layer, results were ECTX, and this is similar to what Nikki was seeing yesterday in this same zone where upper LCC seems to have an overall stronger snowpack (as usual).

Below the rain/snow line, wet/loose activity was widespread on all aspects.

The DJL is weakened further with water percolation below ~9,200' or has a stronger slab on top above 9,200', with the dry DJL layer below. In both situations, a complex setup.

Photos of some minor wet-loose activity from today, including north-facing slopes up to 9,600'

Today's Observed Danger Rating
High
Tomorrows Estimated Danger Rating
Considerable
Coordinates