Observation: NWAC Forecaster

All Observations

Basic Information

Observation Details

Observation Date:
December 21, 2021
Submitted:
December 21, 2021
Observer:
NWAC Forecaster - Dallas Glass
Zone or Region:
West South
Location:
White Pass Backcountry/ Cortright Butte (All Aspects Near and Below Treeling)

Signs of Unstable Snow

Recent Avalanches? 
Yes
Cracking? 
None Experienced
Collapsing? 
None Experienced

Media/Attachments

This large natural storm slab avalanche likely occurred on Monday 12/20, and failed at the base of the recent snow. Third Bowl, Hogback Mt, 6500', NE Photo: Remy Aucoin
Shovel tilt tests can highlight shallow soft slab layers that could fail. This one failed on the 12/20 interface about 6" below the surface.
Mt Aix and Bumping Ridge in the East South zone.
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