Williams Lake Area

Location Name: 
Williams Lake Area
Date and time of observation: 
Tue, 11/26/2019 - 12:08
Location Map: 
United States
36° 32' 46.1076" N, 105° 26' 9.798" W
US


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

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

Went out to look at what the winds were doing near treeline and if we had formed any wind slabs. Orographic snow today was falling at nearly an inch an hour without much wind.  Due to poor visibility we weren't able to see ridgetops or any signs of natural avalanches.  Moving across Williams Lake there was a noticable differnce from the low density snow in the trees to wind affected snow. Above 11,000' the snowpack became more supportable.  In snow pits there is a new 1 finger hard wind slab that most likely formed last night with the strong SW winds (gusting in the 60's).  I would suspect this wind slab is harder at higher elevations in the Alpine.  In most of the pits we dug, the wind slab was 20 to 30 cm thick.  We were still getting lots of whumpfing and collapse with shooting cracks going up to 100' away.  Most compression and extended column tests were failing on isolation or very easy force with full propagation.  About 4" of low density snow fell on top of the wind slab during the day. When the winds did pick up the snow was easily transported.

Snowpack photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
100% 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: 

Pretty good orographic snow today with an additional 4 inches of snow during the day.  Winds diminished during the day out of the SW.  Very cold temperatures today that were in the single digits.