Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Name:
Jeff T
Observation Date:
January 14, 2021
Submitted:
January 14, 2021
Zone or Region:
Snoqualmie Pass
Activity:
Skiing/Snowboarding
Location:
West of Snow Lake Divide on @ ~4600'

Signs of Unstable Snow

None reported

Observations

There is debris in a lot of the expected places. The Source Lake fan is largely debris covered down to the lake. The area under the Bryant Peak Couloir is less debris filled but has plenty of runnels. The crust gained strength with elevation, notably above 4300' becoming supportable to ski penetration but not to boot penetration.

Dug a pit at aprox 4600' on the ESE facing slope, west of the divide.
2.5cm of Graupel on top of the 10.5cm 1/13 crust.
Test results yielded: CTN, ECTX, PST End Down 44

1/13 crust failure on hand shears required coaxing but were clean.

Media

Rimed Precip Particles (Graupel) from 1/14. This made up much of the surface grain type encountered today.
Avalanche debris covering the Source Lake Fan from the choke at the top of the fan down to the lake on 1/14
Runnels on the approach up the Alpental Valley on 1/14
WordPress Lightbox