Hemlock Ridge Obs

Mammoth Mountain Sidecountry
Submission Info
Volunteer Observer
Tuesday, January 26, 2021 - 12:30pm
37° 37' 56.4888" N, 119° 3' 22.644" W
Snowpit Observations
More detailed information about the snowpack: 

An AIARE Level 1 field group toured out into the Mammoth Sidecountry today in order to check for the presence of mid-elevation wind affect, see if there was enough snow to create pockets of loose dry avalanche hazard, and also to examine the snowpack structure in advance of the upcoming storm system.

Weather conditions today were very cold, with stronger than advertised SW winds blowing Strong in the AM at 11,000', and Moderate lower down with more terrain shelter, though blowing snow and active wind transport was observed down to 9500' with skin tracks being refilled.

An average HS of 95cm was recorded at 9900', though at 9200' the new snow barely covered the ground and became dangerously thin for skiing. 10-20cm of F- snow was observed on most aspects and stayed cold today even on solar aspects. On steep slopes and confining features were were able to push small pockets of Loose Dry, up to Size .5. 

A formal snow profile on a NNW aspect at 9900' (attached) revealed the soft surface snow to be resting on a 5cm thick stiff windboard which acted as a bed surface in both shovel tilt and compression tests. ECTN13, CT16 down 23cm on this layer.

A great day of low angle powder skiing, will be really interesting to see the new storm quadruple our snowpack in only a couple of days. Stay safe out there everybody!

Snowpit or crown profile photo or graph: 
Snowpack photos: 
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