Tue, Feb 16, 2021 - 1:42 PM
Three Sisters Area
Snow Conditions No Avalanche Activity
Ski or Snowboard
Today we toured up the east ridge of Tumalo from the Vista sno park.
It snowed sporadically on and off during our tour, heavily at times. Wind was calm to light out of the W/SW near the top, but calm in the trees. There was evidence of blowing snow near and at tree line and observable wind slab development on lee slopes and terrain features.
We poked around in the snow pack down a hard crust that was 30-45" deep. Various layers were present in the upper pack with density changes that all seemed to be related to the warming and cooling events during the last storm cycle. The deepest ~10" layer was fist hardness, with a ~8" 4 finger layer above it, followed by a fist layer of new storm snow about 6" deep. In hasty pits the layers all seemed well bonded and were not reactive to applied energy. We skied low angle terrain, but I was able to get a small sluff going in the new storm snow from today on a convex rollover into steeper 30 degree plus terrain. It did not move far and ran atop the 4f layer.
No cracking or whumphing were observed.
Ski quality was excellent.