Observation Date
3/1/2014
Observer Name
Greg Gagne
Region
Salt Lake » Big Cottonwood Canyon
Location Name or Route
BCC <-> Millcreek
Weather
Sky
Broken
Wind Direction
Southwest
Wind Speed
Moderate
Weather Comments
Temps just below freezing. Winds gradually diminished throughout our morning tour, although some Moderate gusts were noted along Reynolds Ridgeline as well as Soldier Peak.
Snow Characteristics
New Snow Depth
2"
New Snow Density
Medium
Snow Surface Conditions
Powder
Wind Crust
Melt-Freeze Crust
Rain-Rime Crust
Snow Characteristics Comments

Was not finding nearly as much new snow amounts from Friday night as were reported elsewhere in the Cottonwoods. A trace at the Spruces, with perhaps 5-10 cms (2-4") atop Little Water Peak. New snow was quite dense. Below about 8000' snow surface is a breakable crust, and a stout rain crust at about 7500' (Someone who was staying overnight at Big Water yurt at the end of MCC road reported heavy rain overnight.) East through Southwest were crusted underneath Friday night storm totals. Widespread wind scouring and damage above about 8500'. Was still finding soft snow in sheltered north aspects between about 8000 - 9000'.

Red Flags
Red Flags
Recent Avalanches
Wind Loading
Avalanche Problem #1
Problem
Persistent Weak Layer
Trend
Same
Problem #1 Comments

Whereas I was mostly finding 4F wind slabs on Friday, the wind deposits this morning were much denser - 1F or Pencil. Several ski cuts on several wind-loaded test slopes on Reynolds, Soldier, and Little Water between about 9000-9500' could not get these dense slabs to crack. However, with widespread wind loading and new snow, am thinking fresh wind slabs are pretty easy to find. In many areas, these slabs are sitting atop a density inversion with some lighter-density snow that fell on Thursday afternoon at the start of the storm. This lighter-density snow was the weak layer for most of the activity we observed on Friday.

Comments

Route today was a strange lollipop-shaped loop that left the Spruces, ascended Reynolds and down Reynolds Glades, up Soldier, down through Wilson Fork to MCC road, and back up to Little Water Peak with an exit back to the Spruces. The intention was to find the sweet spot that was above the crusted snow, but below the wind-affected snow. We discovered this is a pretty tight elevation range and aspect. Some fresh wind deposits that were much denser than Friday morning, but despite ski-cutting several, I could not get any to crack. Still finding the density inversion that was noted in many observations from Friday. Where we were traveling along BCC/MCC ridges and drainages, this was buried 30-40 cms (12-16") down. Still getting easy to moderate - and clean - shears at this interface.

Was finding 3-5 cm rain crust at about 7500', but quick hand pits were showing either dry or slightly damp snow underneath. Do not think there is a low elevation risk of wet slides at this moment.

Overall was not finding things nearly as sensitive as I was on Friday, but perhaps conditions vary quite a bit between mid-BCC and upper LCC or BCC. More snow and wind loading may mean an entirely different story in other drainages and canyons.

Video
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable