Observation: Duke Bowl

Observation Date
2/2/2013
Observer Name
Michael Janulaitis
Region
Uintas
Location Name or Route
Duke
Weather
Sky
Clear
Snow Characteristics
Snow Surface Conditions
Powder
Red Flags
Red Flags
Wind Loading
Cracking
Collapsing
Rapid Warming
Poor Snowpack Structure
Comments

Well I was too tired Saturday night and blew off my observations but after looking this morning I see there wasn't an observation posted for the Uintah's for the weekend and there was 2 things worth sharing. First off, surface hoar was widespread above 9500. It had grown to over 1/2 inch in size and was present in both low lying areas and on the NW slopes I skied. Second, I was getting collapses for the first time this year while skinning NW facing terrain. What is interesting to note, I did not collapse any layers on my first skin up. I was triggering collapses on second and even third lap. The snow was collapsing on the NSF buried in early January. After a few feet pile on top of this layer I wouldn't be surprised to see the same kind of deep slides we saw over the weekend in the Wasatch.

I did dig to the ground in steep (40+ degrees) north facing terrain. HS 120 CM. ECTN 21 BRK/Q3 above the NSFs formed in early January. Other than the weak layer near the surface the rest of the snow pack was pretty stout. The old rain/rime crust sandwiches from early season are now about 6 CM of first hard facets which of coarse is also concerning but at this time this layer is not reacting to stability tests.