Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Steven
Observation Date:
March 13, 2022
Submitted:
March 13, 2022
Zone or Region:
Snoqualmie Pass
Activity:
Skiing/Snowboarding
Location:
Commonwealth

Triggered Avalanches

Did you trigger any avalanches? 
Yes
Was it intentional? 
Yes
Avalanche Type:
Wet Loose
Size:
Size 1: Relatively harmless to people
Elevation:
5500'
Aspect:
S
Comments:
Very small wet loose slides were easy to skier trigger in the new snow on SE-SW aspects from ~5700' down to ~5200'

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Wet Loose
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
Aspect:
S
Comments:
Old (D2ish size) debris filled Cocaine couloir down to the bench below the couloir. Didn't immediately see any crown lines, so guessing it was wet loose.

Signs of Unstable Snow

None reported

Observations

Traveled from Commonwealth to Cocaine Couloir from ~0900 to ~1300.

In that area the new snow was heavy and wet and ranged from about 3cm at 3300’ to 12cm by the middle of the couloir back to 5cm near the top of the couloir. It looked like the top of Cocaine got very slightly wind scoured, and it looked like some of that snow wound up at the top of the North Couloir.

The snow fell on a very supportable crust, but doesn’t seem like it bonded to that surface very well - things like pole tests easily entrained all of the snow above the crust.

We also saw tree bombs entraining a bit of snow as they slid downhill as early as 10:00 on W facing aspects, and it was easy to produce very small wet loose slides on SW-S-SE aspects by about 12:00.

Cocaine was also filled with old debris. No crowns immediately visible from that slide.

Media

Rollerballs from tree bombs on several aspects starting as early as 10:00
Easy to produce very small wet loose slides in the new snow
Old debris in Cocaine couloir (extended for several hundred feet below the location of this photo)
Pole drag tests easily entrained snow
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