Observation: Grizzly Gulch

Observation Date
4/1/2026
Observer Name
Gagne
Region
Salt Lake » Little Cottonwood Canyon » Grizzly Gulch
Location Name or Route
Grizzly Gulch / Twin Lakes Pass / Patsey Marley
Weather
Sky
Obscured
Precipitation
Light Snowfall
Wind Direction
West
Wind Speed
Light
Weather Comments
Light breeze on ridgetops.
Snow Characteristics
New Snow Depth
6"
New Snow Density
High
Snow Surface Conditions
Powder
Damp
Snow Characteristics Comments

Rain/snow line is 7,500. Damp/heavy snow that trended less dense above 10,000 feet. Storm totals are 10-25 cms (4-10") with the most snow at the upper-most elevations. Alta Collins is reporting nearly an inch of water.

This dense snow is great for base-building of the snowpack ..... too bad it's now April.

Red Flags
Red Flags
Recent Avalanches
Red Flags Comments
No obvious red flags from what I observed, but I just heard of an avalanche on Petticoat, a steep slope on the southwest aspect off of Patsy Marley that drops down to the summer road.
Comments

It is great to see snow return, and the dense snow made for surfy travel and riding conditions. Today, I was looking at:

Sensitivity in the storm snow - None. Despite a cohesive slab of dense snow, I got no cracking or any other signs of instability.

How well the storm snow bonded to the old snow surface - Excellent bond.

Evidence of wind drifting - Despite wind speeds gusting 15-25 mph during the same period of heaviest snowfall overnight, I saw no evidence of wind-drifting.

Supportabiity of the existing snowpack - The storm snow fell on top of a damp/moist/saturated snowpack. Once you get above about 9,800', the old snow surface is somewhat frozen in places. Below 9,500' the snowpack is wet, however the old snowpack is so dense it is still supportable and makes for easy travel.

Biggest concern I saw is that the storm snow is now disguising rocks (see photo below) and other "early-season" hazards. This is not your typical snow coverage for April 1, so you need to carefully look at the snow surface for buried rocks, branches, bushes, etc.

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