Observation Date
1/4/2014
Observer Name
Greg Gagne
Region
Salt Lake » Big Cottonwood Canyon » Mill D North » Butler Fork » Reynolds Peak
Location Name or Route
Reynolds Peak/Little Water
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Direction
North
Wind Speed
Light
Weather Comments
Nice to be out in some weather! -10C with occasional Moderate wind gusts out of the N/NW. For the most part the winds were calm and have appeared to back off substantially from the past 12 hours.
Snow Characteristics
New Snow Depth
3"
New Snow Density
Low
Snow Surface Conditions
Powder
Wind Crust
Snow Characteristics Comments

5-10 cms of very light density with some wind drifting and fresh cornices noted along Reynolds Ridgeline. New snow amounts are probably something a sledder in Boston Common would scoff at, but here in the snow-starved Wasatch, it is welcome and improved ski conditions. Winds scoured many exposed, mid-elevation, windward aspects. HS 60-90 cms.

Red Flags
Red Flags
Poor Snowpack Structure
Red Flags Comments
Enough said about our snowpack structure.
Comments

Intentions today were to avoid upper elevations which were likely quite wind affected. Route today included ascending Reynolds and skiing NE aspect off of the summit as well as Little Water Trees. Elevations were < 9500'

5-10 cms in itself is not going to affect snow stability, but was curious how the westerly winds were loading E/NE aspects with a very weak snowpack underneath. Was finding fresh cornices on east-facing ridges up to 45 cms thick and somewhat sensitive to cornice kicks. Also finding a few small shallow wind drifts that would crack locally with a ski cut. Normally, such a small wind affected snow event would hardly be noticeable, but with wind drifts forming upon a super-weak snowpack, wind drifts could be quite sensitive and even a small slide could step down to a buried weaker layer.

However, from what I was seeing this morning at elevations < 9500', there was not enough new snow (as well as transport from pre-frontal winds) to create widespread wind drifts. For the most part, new wind-drifted is limited to small, shallow pockets and were easy to identify and ski cuts are an effective mitigation technique. However, I wouldn't mess around with any steep N through E slope with recent wind drifts given the poor snow structure underneath. For example, we were going to ski a line off of the E-facing Reynolds summit, but I did notice some drifting about 15 meters (50') down off of the ridgeline so avoided that line and instead moved to terrain that wasn't wind-drifted.

At the 8K - 9.5K elevations we were traveling today, I would call the hazard Moderate.

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