Avalanche On North Castle

Location Name: 
North Castle Peak
Region: 
Donner Summit Area
Date and time of avalanche (best estimate if unknown): 
Sat, 01/27/2018 - 09:05
Location Map: 
United States
39° 22' 3.3348" N, 120° 21' 7.686" W
See map: Google Maps
US


Red Flags: 
Recent avalanche activity
Observation made by: Public
Avalanche Observations
Avalanche Type: 
Slab
Slope: 
30degrees
Trigger type: 
Snowboarder
Crown Height: 
1 ft
Aspect: 
Northeast
Weak Layer: 
Unknown
Avalanche Width: 
60ft.
Terrain: 
Near Treeline
Bed Surface: 
Old Snow
Avalanche Length: 
150ft.
Number of people caught: 
1
Number of partial burials: 
0
More detailed information about the avalanche: 

I was the second person to drop into this slope.  The avalanche started about 10 feet after I headed down the slope.  It broke both in front and behind me and slid for about 150 feet

Avalanche Photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
75% of the sky covered by clouds
Air temperature: 
Below Freezing
Wind Speed: 
Light
Precipitation: 
None
Air temperature trend: 
Warming
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: