Surface Hoar in Negro Canyon

Location Name: 
Negro Canyon
Region: 
Donner Summit Area
Date and time of observation: 
Fri, 01/08/2016 - 14:30
Location Map: 
United States
39° 20' 4.9992" N, 120° 17' 26.2932" W
See map: Google Maps
US


Red Flags: 
Observation made by: Guide at Alpenglow Expeditions
Snowpit Observations
More detailed information about the snowpack: 

The surface hoar that formed last night was still very present by 15:30 today, indicating that it is at risk of being buried by tonight's incoming snow. Areas directly exposed to the sun were showing signs of melting by the afternoon, but all shaded and partially shaded slopes were harboring intact .5-1cm SH. I also received a report of significant SH growth above 8000' on the West Shore of Lake Tahoe. 

Snowpack photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
25% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Calm
Precipitation: 
None
Air temperature trend: 
Cooling
Wind Direction: 
Accumulation rate: 
None
More detailed information about the weather: 

Beautiful, clear day was giving way to the incoming storm system by 14:45.