Manto nivoso

Northern San Juan

Chris DicksonNorthern San Juan
Ver en el mapa
Foto de la observación 1Foto de la observación 2Foto de la observación 3Foto de la observación 4Foto de la observación 5

Weather

Warm springlike conditions (40-50 degree F), with gusty winds increasing throughout the day. Thin clouds in the morning yielded to partly sunny skies. Snow became wet, sticky, and slow on the exit.

Snowpack

I dug two snowpits. In the first pit at 10,800' on a west-facing slope, I found 74cms of snow that mostly consisted of fist-hard facets of similar size. In compression and extended column tests, I got no results. The top 20cms of snow here was incredibly weak, which is representative of many below treeline shaded slopes in this area. The second pit I dug was at 11,500' on an east-facing slope. The snowpack here showed the impacts of sun and wind, with more layers and a concerning structure of 4-finger over fist-hard snow 30cms below the surface. I got a CT24 resistant planer result on this interface, but no results in an extended column test. The snowpack here also featured a well-developed basal facet layer consisting of 2mm facets.