2nd week profile

Powered by
Monday, Jan 8, 2018 9:02 PM
Aaron Hartz
Pro Ob
Three Sisters Area (44.009428, -121.642063)
Ob Date/Time:
Mon, Jan 8, 2018 - 8:28 PM
Report Type:
Snow Conditions
Mode of Travel:
Ski or Snowboard

Written Report:
I toured on Tumalo today.The upper most crust in the snowpack was supportable on all aspects and the one inch of recent snow on the surface made skinning smooth. The air temperature hovered right around freezing during the tour and the wind was light out of the SW-W. Even with only 1 inch of new snow in the last few days, there was some new wind slab at the top of the Tumalo bowl. It was shallow, and just below ridge top it ranged from 2-6 inches thick. Since it was shallow and very isolated, it was not much of a concern today but it demonstrates how effective the wind is at transporting snow. I observed no other avalanche problems during my tour.

I dug into the snow on the north side of Tumalo at 7200ft and profiled the top 1 meter of snowpack (see profile below). The rounding facet layer was about 50cm below the surface. The rounding facet layer was stubborn to fail during stability testing.

By the time I left my pit site, it was snowing at a rate of about 1cm/hour.

Ski quality was decent with a touch of soft snow over crust.

Temperature: 0°C Wind: West @ 1-16 mph
Snow Depth: 168 cm Elevation: 7270 ft Aspect/Slope: North / 28°


Caption: Tumalo snow profile