Observation: Avalanche Professional

All Observations

Basic Information

Observation Details

Observation Date:
December 22, 2022
Submitted:
December 22, 2022
Observer:
Avalanche Professional - Mountain Bureau
Zone or Region:
East North
Location:
Mazama Lowlands (2200-6000ft)

Signs of Unstable Snow

Recent Avalanches? 
None Observed
Cracking? 
Widespread
Collapsing? 
Widespread

Advanced Information

Weather Summary

-27 in the morning and -5 high for the day. Sunnier than expected.

No observed

Snowpack Observations

The lowlands and environs East of WA Pass have a weak structure. 5cm of evolved basal facets lines the bottom of the pack. Snow depth HS 80cm. Rolling collapses are easily triggered when the snow pack is deep enough to support a slab. 3-5mm SH surface form was observed in all open areas. Remote triggering is possible.

Avalanche Problems

Problem Location Distribution Sensitivity Size Comments
Persistent Slab
Isolated
Specific
Widespread
Unreactive
Stubborn
Reactive
Touchy
 Layer Depth/Date: 75cm

Persistent slab is the main problem all areas with a shallow snowpack