Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Nate Bour
Observation Date:
January 31, 2021
Submitted:
February 1, 2021
Zone or Region:
Snoqualmie Pass
Activity:
Skiing/Snowboarding
Location:
Keechelus Ridge, radio tower

Signs of Unstable Snow

None reported

Observations

On our way in from Kachees Lake we saw some moderate roller balls spurred from tree bombs due to windy conditions at 4k on north faces. In the afternoon the roller balls became wide spread on all aspects. The pit we dug on a west face just below the old radio tower showed 20cm of new dense snow on top of a rain crust with about 15cm of graupel. Cohesion between the new snow and the rain crust layer was good. While riding we were able to sideslip and get the new snow to pile up below our boards on the crust layer but it did not want to release easily. The afternoon brought some sun breaks and the wind was persistent. Total snow depth was 330cm.

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