VA Lakes - New Snow, small loose-wet sloughs

Black Mtn
Submission Info
Thursday, April 15, 2021 - 2:00pm
Red Flags: 
Recent loading by new snow, wind, or rain
Rapid warming
38° 2' 20.7132" N, 119° 16' 37.74" W
Snowpit Observations
More detailed information about the snowpack: 

Toured up into VA Lakes to check on new snow amounts, wind effects, and warming effects.  Solid 5" / 13cm of new light low density snow from yesterday on northerly aspects at 11,000', mostly ontop of firm crust.  Closer to 2" down below 10,000'.  Very small isolated pockets of wind drifted snow that were over 1ft deep, but no shooting cracks in these small deposits.  Greatest concern was minor shallow loose sloughing, both dry and wet depending on aspect, and both natural and human triggered.  See attached photos.  Relatively chilly day, despite full sunshine and blue skies.  Dry enjoyable dust on crust conditions on northerly aspects even at mid-afternoon.  Easterly aspects at this time had a refreezing surface crust.  

*VA Lakes Rd is now completely plowed and open to the end (summer trailhead - thanks Rd crews!).  

Snowpack photos: 
Minor Loose dry sloughing- skier triggered NE aspect South Peak
Natural small release/cornice failure Black Mtn 11,100' East aspect
E face Dunderberg - Coverage
SE Gully - Dunderberg coverage
Small Loose wet sloughs, natural and skier triggered - 11,400', SE aspect
Any other comments about the observation or links to outside pages that have more info on the observation: 

For more information on snowpack and avalanche conditions in the Bridgeport area, from Virginia Lakes north to Sanora pass, please visit the Bridgeport Avalanche centers website.

Weather Observations
More detailed information about the weather: 

Blue skies all day in VA lakes, lots of cloud cover back toward Mammoth around 4pm.

-12:45 @ 9,800': Air temp = -2°C

-1:45 @ 11,150' (ridgetop): Air temp = -6°C, light to moderate consistent southerly winds

-2:30 @ 11,800' (top of Blk Mtn): Air temp = -6°C, calm winds with light to moderate gusts out of NW.

-3:45 @ 9800': Air Temp: -1°C.        

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