Observation: 10420

Observation Date
1/19/2014
Observer Name
Evelyn Lees
Region
Salt Lake » Big Cottonwood Canyon » 10420
Location Name or Route
10,420
Weather
Sky
Clear
Wind Speed
Calm
Weather Comments
Another warm "spring" day - unfortunately.
Snow Characteristics
Snow Surface Conditions
Faceted Loose
Melt-Freeze Crust
Snow Characteristics Comments

Cold dry snow remaining on northerly facing, upper to mid elevation slopes. Other slopes crusted in am, softening during the day.

Red Flags
Red Flags
Rapid Warming
Poor Snowpack Structure
Comments

If I'm going to dig a pit, I'm searching for a weaker area or a place that represents where a person could possibly trigger a slide. One way to search for that is by snow depth - I get out my probe, and traverse the slope getting a feel for the average depth of the snow pack. I'm not looking for the deepest snow pack or even an area of average depth, but more often a shallower snow pack area. Probing also has the added benefit of getting a feel for the layering in the snow pack. Of course, this year, in many of the shallower places, you can skip the probe and use a ski pole, handle or even basket down.

Digging snow pits can be a frustrating endeavor these days. this is a north facing slope at 10,400'. Total depth of 115 cm. Structure still looks bad, but no failure with ECT or CT tests in this location. Weakest snow was the lower facet layers. I like using shovel tilt test for the upper layers - here they seemed well bonded. With recent avalanches on similar slopes in the past week, I assume I just found a stronger area of snow, not representative of where a slide could be triggered.

This was just sort of cool - large surface hoar slightly melted and then refrozen on to an inch thick melt-freeze crust. I'm sure in a day or so, it will be completely melted into the crust.

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