NTL No Name Peak

Location Name: 
North of No Name Peak NTL
Region: 
Williams Lake Area
Date and time of observation: 
Wed, 12/25/2019 - 13:00


Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain

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

Went to observe how the christmas eve storm snow was bonding. We found 4 to 6 inches of new snow, with fresh graupel mixed in. In the morning, winds were moderate to strong, transporting snow in all directions. A stiffening wind slab was observed near tree line and above. This layer did not appear to be bonding well with the old snow surface, as we observed shooting cracks. Storm slabs were failing on the old snow-new snow interface, over a foot deep. Avalanche control mitigation teams were getting storm slab avalanches on leeward slopes, initiated by ski cutting and small hand explosives. Windward sides were stripped.

Its been the year of graupel, as we continue to find graupel in our mid pack. This layer of concern continues to get deeper and deeper in the snowpack. It failed under moderate force with clean shears. See Video  

Photo 1: Pit located beneath rock bands.

Photo 2: Shooting cracks underfoot.

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
75% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Moderate
Precipitation: 
Snow
Air temperature trend: 
Static
Wind Direction: 
Southwest
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 

Cold temperatures in the morning, potentially dropping even colder in the afternoon. Moderate winds with strong gusts transported snow, and gave way to a calm afternoon. Very light snowfall in the morning did not accumulate.