Comparison snowpit in Lincoln Valley.

Location Name: 
Lincoln Valley
Yuba Pass Area
Date and time of observation: 
Wed, 02/07/2018 - 10:35
Location Map: 
United States
39° 35' 31.056" N, 120° 29' 1.6872" W

Observation made by: Forecaster
Snowpit Observations
More detailed information about the snowpack: 

Melt freeze crust on all aspects traveled today in the 6,700' to 7,720' elevation range. The exception was small areas of N aspect terrain that has 100% shade all day. Crust thickness was around 1 cm on N aspects (photos at lat/long of this ob) and up to 4 cm thick on S aspects. Snow surface melt on S aspects became noticeable by 11 am with the surface crust becoming unsupportable.

A comparison snowpit dug at the head of Lincoln Valley adjacent to the snowpit from Feb 2 (N aspect, 7,650', 39.573231, -120.389947) indicated a continued increase in strength of a previous faceted weak layer at a height of 71 cm in the snowpack. Snowpit test results on this layer changed from CTM-11 SC and CTM-14 SC on Feb 2 to CTH-25 SP today. Propagation test results of ECTX and PST 60/100 end in the comparison snowpit today indicate very good snow stability.

Snowpack photos: 
Weather Observations
Blowing Snow: 
Cloud Cover: 
Air temperature: 
Above Freezing
Wind Speed: 
Air temperature trend: