Observation from Andesite Pk

Location Name: 
just S of Andesite Peak
Donner Summit Area
Date and time of observation: 
Mon, 12/18/2017 - 13:00
Location Map: 
United States
39° 21' 1.1412" N, 120° 22' 1.2936" W

Red Flags: 

Observation made by: Educator at Donner Summit Avalanche Seminars
Snowpit Observations
More detailed information about the snowpack: 

We dug into the old, fat windslab just on the W side of  the ridge south of Andesite's summit.  40 cm of windslab on top of a 2 cm thick layer of weak faceted grains on top of a plinth-hard rain crust.  Facets failed under a compression test (CT15 SC).  Dangers on the ski field today included sticks, rocks, old ski tracks, some small icy patches, and running low on lip balm.  Very warm mid-day with zero wind.  South-facing snow softened nicely.

Weather Observations
Blowing Snow: 
Air temperature: 
Above Freezing
Wind Speed: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: