Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Darin Berdinka
Observation Date:
March 25, 2023
Submitted:
March 25, 2023
Zone or Region:
West North
Activity:
Skiing/Snowboarding
Location:
Bagely Basin

Triggered Avalanches

Did you trigger any avalanches? 
Yes
Was it intentional? 
Yes
Avalanche Type:
Soft Slab
Size:
Size 1: Relatively harmless to people
Elevation:
5000’
Aspect:
SE
Comments:
Easily triggered soft slab avalanches on steep convex rollovers.

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Soft Slab
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
5000’
Aspect:
N
Comments:
As described elsewhere a skier triggered a reasonably large avi dropping into a steep convex rollover on the north face of Table.

Signs of Unstable Snow

Did you see shooting cracks? 
No
Did you experience collapsing or whumpfing? 
Yes, Isolated

Observations

Skied SE, E, W aspects in Bagely Basin finding variable stability in the ~18” of new snow. Soft slabs on steep convex rollovers were easily triggered.

Approaching the Grotto on east face terrain we experienced significant whomping (whumpfing?). An ECT resulted in propagation on the crust at 15 taps. ~8-10” slab with ~8-10” loose snow above. We bailed but others continued without incident.

I’d continue to be somewhat cautious going into Sunday in steep terrain. Expect crust on south facing slopes.

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