Extended Column Test - Upper Velma Lake/Jannie's - 1.30.10

Location Name: 
Upper Velma Lake/Jannie's
Region: 
Desolation Wilderness Area (including Emerald Bay)
Date and time of observation: 
Sat, 01/30/2010 - 13:36
Location Map: 
United States
38° 55' 50.2932" N, 120° 7' 39.2124" W
See map: Google Maps
US


Red Flags: 
Recent loading by new snow, wind, or rain
Observation made by: Public
Snowpit Observations
More detailed information about the snowpack: 

 ECT NR at Upper Velma Lake/Jannie's backcountry.  North aspect, 37 degree slope.  Several failures at density changes, but no propagation.  Test slope was windloaded and the snowpack as measured as over 300 cm deep (likely due to wind-drift).

For upper 110 cm of snowpack, densities and temperatures:

H (cm) from Surface
T (°c)
Density
0
---
Fist
10
-4.2
Fist
20
-5.0
4F
30
-5.0
Fist
40
-4.9
Fist
50
-4.8
Fist
60
-4.6
4F
70
-4.5
4F
80
-4.5
4F
90
-4.5
4F
110
-4.5
4F
110
-4.5
4F

 

Any other comments about the observation or links to outside pages that have more info on the observation: 

 

Weather Observations
Blowing Snow: 
No
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Light
Precipitation: 
Snow
Air temperature trend: 
Cooling
Wind Direction: 
Southwest
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 

 Overcast sky, trace of snow falling.  Temperature was dropping.  Winds were 10-15 mph out of the SW.