Went for a short tour in the Sherwins today to take a look at recent crust/facet interfaces. No signs of instability.
Despite the clear April skies, the day felt wintry due to northwest winds and cold air temperatures.
My tour stayed below treeline on mostly north aspects up to 9600′:
Ski pen was between 5 and 20cm. At lower elevations, and on sun and wind exposed slopes, I was skining in a partly supportable melt-freeze crust with just a few centimeters of windblown snow from yesterday strom. On steeper northerly pitches above 9000′ the crusts gave way to settled snow. HS was between 330cm and 400+cm.
I dug quick test pits throughout my tour on NE, N, NW and W aspects. I found three crusts in the upper snowpack. The first was at the surface and was never fully supportable (although I did not travel on southerly slopes today). The second and third are the 3/29 and 3/19 layers. I was alble to track these throughout my tour. They wer usually down 30 and 60cm respectively fro mthe surface, althout they were found up to 80cm deep in wond laoded areas.
I tested the layer with CT’s and ECT’s. I only had one concerning result: 9600′ on a 25 degree NE slope; CTH Sudden Planer down 80cm on the 3/19 layer (.5mm FCsf and FCxr) of rounding facets. This test result was adjactent to an old crown from last week and meant to be representative of that slope. No result in the ECT.
In this area the peristent slab problem seems to be isolated and stubborn to trigger.