Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Andy Goodwin
Observation Date:
December 17, 2021
Submitted:
December 17, 2021
Zone or Region:
West South
Activity:
Walking/Hiking
Location:
Mt St Helens Worm Flows Route

Signs of Unstable Snow

None reported

Observations

Temps mid 20's, winds 15-20, cloudy (no sun on the snow today).

2600-4000': Deep soft snow, no crusts or structure

4000- 5500': Ridges and valleys, deep soft snow (3-4 ') without layers other than rare patches of surface crusty wind slab 2-3" deep. Firm surface layer usually not thick enough to support a snowshoe.

At 5600', on a horizontal surface and on a south aspect slope, surface firm wind slab 2-3" thick, then 6-8" soft snow, then a thin firm layer (1/4" thick) was detectable with care. That layer did not seem to be a source of instability. Below that were many feet of soft snow.

No avalanches, or avalanches, or avalanche remnants, were seen.

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