Donate Now to Our Year End Campaign!

Observation: Fat City

Observation Date
12/29/2025
Observer Name
Hardesty
Region
Salt Lake » Park City Ridgeline » Fat City
Location Name or Route
Guardsman shoulder to Fat City
Weather
Sky
Clear
Wind Speed
Calm
Snow Characteristics
New Snow Depth
10"
New Snow Density
Medium
Snow Surface Conditions
Powder
Wind Crust
Damp
Snow Characteristics Comments

Excellent skiing, particularly on low angle shady terrain. Some patches of surface hoar but this was not widespread. Other diamonds on the surface were just cold stellars, but I imagine the snow surface will start to weaken soon, possibly on solar aspects as well.

Red Flags
Red Flags
Poor Snowpack Structure
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments

THIS will be a tricky set-up for us now with the Christmas Rain Crust. Adding insult to injury is the expectation of facets developing possibly above and below the crusts.

Transitioning to a low probability high consequence regime with little to no feedback provided by the snowpack...until an avalanche. Hogarth's Wicked Environment is apropos here.

Avalanche Problem #2
Problem
New Snow
Trend
Same
Problem #2 Comments

Dry loose will be most common...and will probably transition to wet loose as temps skyrocket in the next day or two. While these are not as severe as PWL, they can mean business in the wrong (ie-unforgiving terrain).

Snow Profile
Aspect
Northeast
Elevation
9,800'
Comments

~~~~~~~~

Travel was from Guardsman to Guardsman Pass and up the shoulder a bit toward 10420. Profile as seen. Crust was roughly 4cm thick and only one of three ECTs provided full propagation at 30 taps. Doubtful that I could replicate this without the back cut of the column. No collapsing or cracking noted; no instability noted.

*

Travel continued across the Scott Pass, up Puke Hill to Fat City. More wind loading there so profile is best approximation. Crust was 10cm thick and variable with some very thin weaknesses within the crust. Basal facets were "locked up" but a couple cm of facets above remained loose and damp. No tests due to the thickness of the crust. No collapsing or cracking noted; no instability noted.

*

Pic 1 - older evidence of wind drifting - note the steep rib faces into the wind...

Pic 2 - smart skier chooses an aspect that does not harbor old PWL (this was not me)

Pic 3 - facets at base of Guardsman/10420 snow structure

Today's Observed Danger Rating
Moderate
Tomorrows Estimated Danger Rating
None
Coordinates