Observation Date
3/24/2015
Observer Name
Greg Gagne
Region
Salt Lake » Little Cottonwood Canyon » Catherine's Pass
Location Name or Route
Catherine's Pass Area
Weather
Sky
Overcast
Wind Direction
Northwest
Wind Speed
Moderate
Weather Comments
Beautiful. Overcast skies with sustained moderate W/NW winds. Temps -3 C.
Snow Characteristics
New Snow Depth
6"
New Snow Density
Medium
Snow Surface Conditions
Powder
Wind Crust
Snow Characteristics Comments

Snow totals range from 10-20 cms (4-8") with some higher amounts in wind drifted areas with some drifts approaching 45 cms (18"). I was finding that with about 15 cms coverage, the snow was dense enough to mostly keep you off of the bottom, especially on lower angled terrain.

Red Flags
Red Flags
Wind Loading
Red Flags Comments
Was finding several recent and fresh wind drifts from westerly winds, mostly confined to elevations > 10K.
Comments

In most years we likely wouldn't notice this little of a storm, but quite a treat for this season. Route today was morning tour to Catherine's Pass Area, Dry Fork, and S-facing Wolverine. Departed LCC at noon with storm clouds brewing.

Easiest to summarize findings with bullet points:

- New snow was well bonded to old snow surface.

- Finding the weakest snow to be a density inversion a few cms above the M/F crust.

- Lots of fresh, dense wind drifts. But they would only crack locally around my skis.

- Ski cuts and cornice drops onto wind drifted slopes could only get localized cracking with a few class 1 slides. Weak layer was the density inversion just above the M/F crust.

- Saw a UAC tweet later this afternoon mentioning surface hoar that had formed overnight. I wasn't finding any surface hoar today and whatever there may have been was likely eroded from the wind.

Hazard was mostly Low today with Moderate hazard for triggering fresh wind drifts in upper elevation terrain most likely to be found SE and E aspects with some possible cross loading. These drifts were not widespread and I think would be relatively small slides. Concerns going forward for Wednesday include higher than anticipated snow totals and/or increased winds.

Photo showing density inversion just above M/F crust.

Photo showing cracking in fresh wind drifts along Catherine's ridgeline.

Today's Observed Danger Rating
Low
Tomorrows Estimated Danger Rating
Low