Observation Date
2/15/2024
Observer Name
Gagne
Region
Salt Lake » Little Cottonwood Canyon
Location Name or Route
Upper LCC Periphery & White Pine
Comments
Afternoon tour in upper LCC periphery as well as some time at White Pine to look at low elevation snow. Upper LCC went through a natural cycle at some point during the afternoon, and I noticed a few small crowns from natural avalanches. (Photos below.)
I dug several pits looking at the top 30-60 cms of snow since Wednesday. In areas that were not wind-drifted, instabilities with the storm snow had settled out and I could not get clean shears within the storm snow or at the interface of the old snow surface. But, once the slab had some wind-drifted snow, I was getting full propagation with extended column tests down 45 cms in the layer of low-density snow that fell late Saturday afternoon. (Photo below.) With one pit, I even got ECTPV where it failed upon isolation. For Friday, I would watch for any new or recent wind-drifting as the layer of low-density stellars from Saturday is likely to still be reactive.
![](https://utahavalanchecenter.org/sites/default/files/styles/observation_image/public/images/observations/2023-24/pit_4.jpg?itok=TFEAiYfO)
Photos of a couple of natural avalanches that ran during a period of intense snowfall Thursday afternoon. Judging by the depths of the crowns, these all likely ran on density inversions within storm snow.
![](https://utahavalanchecenter.org/sites/default/files/styles/observation_image/public/images/observations/2023-24/debris.jpg?itok=oxnW7JVt)
![](https://utahavalanchecenter.org/sites/default/files/styles/observation_image/public/images/observations/2023-24/slide-1.jpg?itok=WDGrWuKl)
Significantly less snow at low elevations. Avalanche danger for Friday will be elevation-dependent, with the greatest avalanche danger on wind-loaded slopes at the upper elevations.
Today's Observed Danger Rating
Considerable
Tomorrows Estimated Danger Rating
Considerable
Coordinates