BTL & NTL S facing near Mammoth

SNOWPACK OBSERVATION
Watertank Glade
Submission Info
Monday, February 4, 2019 - 3:15pm
Red Flags: 
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Watertank Glade 37° 39' 16.4736" N, 118° 58' 27.1524" W
Snowpit Observations
More detailed information about the snowpack: 

Toured up the dome just north of Forest Trail St. skied a few laps on the SE facing glade that leads to the large water tank ‘Water Tank Glade’, between 1100 and 1300hrs. 8,000-8,900ft

HS ranged from 1-1.8M throughout up track, from wind protected below treeline terrain to open more near treeline characteristic terrain.  Leeward rolls held well over 2M of snow. 

Snow here in open terrain was predominately new snow from this storm cycle sitting on manzanita brush, I did not experience and whumphing or collapsing throughout tour.  Where it was not entirely new snow (shady forested areas) storm slab was sitting on top of MF crusts.  Quick 30cmx30cm hand shear tests showed relatively strong bonding  (Q2 shear )to the new old interface, while three storm/wind slab layers revealed themselves to be more sensitive(Q1 Shear) down ~30,  100 and 140cm.  No hand shears failed upon isolation, and no cracking was noted while breaking trail. Did not perform any standardized column tests.

Kept the angle pretty low, dangling above 30 degrees only on micro terrain features. I triggered 1 very small D1/R1 1’x10’x10’ wind slab on E facing steep leeward roll while skiing down.

Winds throughout tour were predominately strong to at times extreme from the SW. I enjoyed 3 laps and was re-breaking trail in parts of the skinner on each one. S1 snowfall , with the sun poking its head through the OVC sky every once in a while.

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