Observation Date
12/8/2016
Observer Name
Evelyn
Region
Salt Lake » Little Cottonwood Canyon » Grizzly Gulch
Location Name or Route
Alta to Honeycomb ridge line
Weather
Sky
Overcast
Precipitation
Light Snowfall
Wind Direction
Southwest
Wind Speed
Light
Weather Comments
Light winds, with gusts into the moderate range. Speeds strong enough to just start drifting snow. Almost a bit of sunshine early on, but then the snow moved in by around noon. Temperatures steadily climbing during the day, into the mid teens.
Snow Characteristics
New Snow Depth
1"
New Snow Density
Medium
Snow Surface Conditions
Powder
Snow Characteristics Comments

Newest snow definitely a bit denser than the snow it was landing on, and just starting to sluff off with a bit of a push. But all in all, perfect powder.

Comments

I especially wanted to look at any buried sun crusts on the south through westerly facing slopes. A lot of variability - thin to nonexistent on some slopes, well bonded on some, and a red flag on other slopes. Concern is where the crust is poorly bonded to the snow below - video below. It will give the potential for slightly deeper and wider slides. Between the widespread low density snow that's on the surface on just about all aspects and these scattered thin crusts, I expect the steep southerly through westerly facing slopes to be more active this storm cycle - more avalanches.

Video

Also took a quick look at the snow pack on a northerly facing slope, 7600'. Any areas with a shallow snow pack have faceted to some degree during the cold temperatures, including some low and mid elevations. In the lower elevation snow pit below, the weakest snow is just below the inch or two of new snow. The weak snow is the 5% density snow that's added up over the past few days, some of which seemed loose and a bit faceted (near surface facets).

The storm looks awesome - lots of dense snow to build a base and increase the depth of our snow pack. While the avalanche danger will certainly spike over the next few days, we'll end up with a more stable snow pack in the long run.

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