Williams Lake

Location Name: 
No Name, Lake Fork
Williams Lake Area
Date and time of observation: 
Mon, 12/30/2019 - 12:00

Red Flags: 
Whumphing noises, shooting cracks, or collapsing

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

Went for a tour around Williams Lake. With several days of low pressure the sun was a welcoming sight. Larger sluff avalanches were observed, initiated near warming rock bands. At higher elevations, moderate overnight northwest winds were enough to push the low density surface snow around. North and east aspects, as well as open areas near and above tree line showed obvious signs of wind transported snow, as these slopes appeared to ripple. Other slopes at higher elevations, particularly near ridgelines, showed signs of cross-loading.

Above tree line, areas where the snowpack is shallow is faceting. We continue to find facets that are not showing signs of strengthening and healing. These layers continue to fail under moderate to hard force, or in some cases under easy force. The tricky thing is: it is becoming harder and harder to decipher where slopes are shallow and where they are deep. Due to the recent storms, slopes which were noticably rocky and barren are now enticing to explore. These areas are comprised of the newly introduced slab which sit on top of various persistent weak layers. We got loud audable collapsing on a southeast aspect.

Photo 1: Moderate winds created wind ripples of low density snow 

Photo 2: Rollerballs and sluffs 

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 

A cold clear day with temps remaining in the low teens. Light western winds, with wind transporting snow on ridgelines.