Recap of Last Week

Location Name: 
Recap of Last Week
Region: 
BWRA
Date and time of observation: 
Sat, 03/10/2018 - 08:56
Location Map: 


Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Rapid warming

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

Diurnal refreeze with significant melting during the day for the past week. Unsupportable surface crusts are forming with corn snow during the afternoon hours. Rapid melting is taking place during the day & we are loosing snow quickly at lower elevations below 8000'(pic of settlement cracks). The crown photo is from the Blue Canyon Lakes drainage on the West side of Sonora Pass after the recent snowfall. This crown appears to have propagated below a continuous rock-band for over 2000' in length with an estimated depth of 3' SS-N-R4-D3. Thursday we saw significant wind transport out of the Southwest, creating wind slabs on Northeast aspects(pic from VA Lakes). The 4' of snow that fell before & during last weekend has become more stable, reducing avalanche activity.

Snowpit or crown profile photo or graph: 
Snowpack photos: 
Settlement cracks
Virginia Lakes ridgetop winds
Many Large Old Trees Down
Twin Lakes
Weather Observations
Blowing Snow: 
Yes
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Southwest
Accumulation rate: 
None
More detailed information about the weather: 

Warm days & warm nights lately has the snowpack dwindling. Thursdays SW winds have moved any soft snow off ridges & into gullies below treeline & NE facing wind slabs. We will continue to see partly cloudy skies during the day & nighttime hours. Tuesday is the next chance for precipitation & a trend towards colder temperatures.