Rohr

Light snow throughout the day with accumulations of 2-4cm's, mostly calm to light winds from the SW, -6 degrees, and broken clouds. A few cm's of low density snow tops a wafer thin melt freeze crust up to 1650m. Above this elevation there is no crust and the recent storm snow makes for great skiing. At treeline and above, there is large variability in ski penetration and wind effect with slight changes in aspect. We dug a test profile at treeline in a location with deeper ski penetration and less wind effect at 1885m, SW slope, 30 degree incline, average height of snow 190cm. We were looking for reactivity in the storm snow and investigating the Dec 9th persistent weak layer.

Upper snowpack results:

CTM 14 (RP), ECTN 11 down 40 on DF's.

CTH 27 (SP) down 70.

Lower snowpack results:

DTE 10 (SP) and PST 65/130 End down 130 on the Dec 9th layer of rounding facets. No surface hoar was found on the Dec 9th interface at profile location.

A size 2 ran to ground sometime since Thursday's storm cycle on a steep NE slope ~2000m on Mt. Rohr. It ran on very smooth ground surface (smooth rock).

No other signs of instability were seen today. We skied SW and W facing open areas at treeline and below.