Winds, windslabs -Lakes Basin

Mammoth Lakes Basin - Below Hammil Bowl
Submission Info
Monday, February 6, 2017 - 1:45pm
Red Flags: 
Recent loading by new snow, wind, or rain
37° 35' 51.2592" N, 119° 0' 9.1188" W
Snowpit Observations
More detailed information about the snowpack: 

-Toured from end of Old Mammoth Rd, across Lake Mary, and up Lake Mary Ridge.  

-Lots n lots o' wind in all but the most sheltered spots.  Mostly from SW, but at times swirling.  See attached photo of wind ridges on "groomed" cross country track ... maybe not the best skate ski day;-).  Cross-country track on north side of Lake Mary had 5' tall wind drifts.

-Snowpit dug 3/4way up Lake Mary Ridge, 9,200' in one of the more sheltered form the wind locations we could find.  See attached profile.  ECTN results. (tests not propagating).  2pm = -1deg C.

-Handpits, CT tests, ECT tests done on leeward side of lake mary ridge top all failed either upon isolation or with easy force, and failed cleanly.  See attached video.  Lots of subtle windslab layers in upper 40cm.  

-Shooting cracks on this same aspect just on leeward side of ridge went about 3.5m in front of skis, and 5m behind skis with jump on slope.  Slope probably would have avalanched had it been steeper for a greater distance before mellowing out below.  

-Dense layer of snow ontop makes skiing a bit funky even in sheltered areas.   

Snowpit or crown profile photo or graph: 
Snowpit videos (tests, etc): 
Weather Observations
Blowing Snow: 
Air temperature: 
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: 

Fairly warm, very windy, some period of light snowfall

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