Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Charlie Hagedorn
Observation Date:
December 24, 2020
Submitted:
December 24, 2020
Zone or Region:
Snoqualmie Pass
Activity:
Skiing/Snowboarding
Location:
Snoqualmie Pass

Signs of Unstable Snow

None reported

Observations

Toured mostly W aspects from pass level to above 5k. Travel conditions were mixed. Truly sheltered open slopes held fine skiing, but many had been variably scoured in only semi-predictable ways. Scouring extends far below the ridgetops. Many trees hold icy crusts beneath.

Coverage near pass level was less than expected -- low-elevation routes are still problematic.

Weather: mostly sunny, easterly flow dominating. Dipped in and out of the inversion through the day.

Avalanche: along with wind-scouring comes thin windslab. Most-reactive patches dinner-plated larger than skis far below the ridgetops.

The E side of Humpback appears from afar to have had some large slides.

Snowpack: Surface hoar of varying size up to 1cm evident on open-sky snow at many elevations. The sun did very little to melt it by 2pm.

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