Fracturing/collapsing wind slabs

Location Name: 
W end Boreal Ridge above Central Sierra Snow Lab
Region: 
Donner Summit Area
Date and time of observation: 
Fri, 01/27/2017 - 10:00
Location Map: 
United States
39° 19' 30.486" N, 120° 21' 41.1336" W
See map: Google Maps
US


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: 

By 1000 this morning enough snow had been transported by E winds to create new, fragile wind slabs collapsing on yesterday's new snow (1.5 cm) and fracturing 7-8 m.  Photo taken on 30 degree convex rollover looking SE.

Snowpack photos: 
Weather Observations
Blowing Snow: 
Yes
Air temperature: 
Below Freezing
Wind Speed: 
Moderate
Air temperature trend: 
Warming
Wind Direction: 
East