Sonora Pass Observations and Snow Profile

Location Name: 
Sonora Pass
Region: 
BWRA
Date and time of observation: 
Fri, 02/17/2017 - 12:00
Location Map: 


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

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

We did a quick patrol around the BWRA and went up to Leavitt Lake and Sonora Pass.  It was snowing heavily the whole time and there was about 6" of new snow on the ground above 9000'.  I toured up a few hundred feet above the pass and easily triggered some small/shallow wind slabs.  I dug a quick snow pit on the ridge about 200 vertical feet above the pass and found some minor instabilities mostly involving density changes in the prior storm snow mixed with some thin wind slabs, but nothing to be super concerned about.

Snowpack Photo Captions:

Photo 1:  Small wind slab easily triggered by skier

Photo 2:  The Sonora Pass sign is slowly getting buried

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Strong
Precipitation: 
Snow
Air temperature trend: 
Static
Wind Direction: 
Southeast
Accumulation rate: 
Greater than 1 in. per hour
More detailed information about the weather: 

Heavy snow and strong SE'ly winds led to near whiteout conditions up at Leavitt Lake.  Snow was normal density up high but wet and heavy and you got down towards the trailhead