Buried Surface hoar and sensitive wind slabs on earthquake dome

SNOWPACK OBSERVATION
NW Shoulder Earthquake dome
Submission Info
Forecaster
Monday, January 21, 2019 - 12:30pm
Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
37° 40' 12.5184" N, 119° 0' 22.0968" W
Snowpit Observations
More detailed information about the snowpack: 

Two AIARE level one groups went for a tour on the earthquake dome today. The goal for both groups was to travel safely, make good decisions and ski the best snow possible.  Group one found sensitive wind slabs on cross-loaded features on an NW aspect that caused them to turn around and abandon planned their tour. 20 cm slabs were reacting on hand sheers and kick turn tests, and the party noted shooting cracks in areas.  Group two dug a pit on an NW aspect on a 28° slope and was able to confirm the presence of preserved buried surface hoar.  SF grains were 3-6 mm in size, and stability tests showed Q1 Sudden Planner results.  Both groups decided to stick to lower angle terrain and instead enjoy the fresh snow on slopes under 30°.

Snowpit or crown profile photo or graph: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
75% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Cooling
Wind Direction: 
Northwest
Accumulation rate: 
None
More detailed information about the weather: 

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