Williams Lake Tour

Location Name: 
Williams Lake Drainage
Region: 
Williams Lake Area
Date and time of observation: 
Mon, 12/16/2019 - 12:00


Red Flags: 
Recent avalanche activity

Observation made by: Professional Observer
Snowpit Observations
More detailed information about the snowpack: 

We went in search of natural avalanches, as we had seen several the day before. The overnight snow hid any remnents of slides, though we did manage to see a snow covered crown and slide path on a northeast facing slope on Lake Fork. There is a lot of variation in our snowpack, thanks to previous strong winds. We observed depth hoar on the ground healing in our deeper snowpack (Photo1,3). In a shallower east to northeast pit (Photo 4), we found the mid pack is failing under moderate force (ECTP12). Lastly, while a solar aspect failed on isolation during a compression test, it did not fully propegate when tested further with an ECT. This southeast slope showed lots of non-continuous weak layers.

Photo 1: Depth hoar is showing signs of strengthening

Photo 2: Breaking trail in the new storm snow.

Photo 3: Deeper Northeast facing snowpack.

Photo 4: Failure on mid pack-faceted layers.

Snowpack photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
75% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Calm
Precipitation: 
None
Air temperature trend: 
Static
Wind Direction: 
Northwest
Accumulation rate: 
None
More detailed information about the weather: 

Temps remained well below freezing. Mix of sun and clouds. Light flurries with no snow accumulation.