Northwest Avalanche Center

Observation: Public

All Observations

Observation Details

Observation Date:
February 20, 2021
Submitted:
February 21, 2021
Zone or Region:
Snoqualmie Pass
Activity:
Driving
Location:
Humpback Mountain (seen from 90 W)

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Size:
Size 2: Could bury, injure, or kill a person
Elevation:
Aspect:
NE
Comments:
While driving W-bound on I90 @ 1730 witnessed the tail end of a slide on Humpback Mountain (best guess). Large snow cloud and debris visible from highway. Did not get a very good look as witnessed while driving.

Signs of Unstable Snow

None reported

Observations

Earlier in the day performed a CT w/ AIARE 1 class that found Q1 CTH21 at 4000’ elevation (Snow Lake).

Media

CT results @ snow lake
WordPress Lightbox