Small Intentional Skier Triggered Avalanches, Smuggler's

AVALANCHE OBSERVATION
Smuggler's Near Minaret Vista

Drainage:

Submission Info
Clancy Nelson
Forecaster
Wednesday, March 21, 2018 - 1:00pm
Red Flags: 
Recent avalanche activity
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Avalanche Type: 
Wet
Slab
Slope: 
45degrees
Trigger type: 
Skier
Aspect: 
Northwest
Weak Layer: 
Storm Snow
Avalanche Width: 
20ft.
Terrain: 
Below Treeline
Elevation: 
9 500ft.
Bed Surface: 
Storm Snow
Avalanche Length: 
5ft.
Number of similar avalanches: 
2
Number of partial burials: 
0
Number of full burials: 
0
More detailed information about the avalanche: 

Several small convex test slopes released D0.5 wind slab and wet storm slab avalanches with ski cutting mid day. All results were on NW aspects around 9500' near and below treeline. Slabs were soft: 4F hard and 15cm thick moist storm or wind deposited snow that broke between 10' and 20' wide and slid between 10' and 5' on 45 and 50 degree slopes. Weak layer was dry F- hard DFs mixed with grauppel, dry. RB2 WB, ECTP 3, and ECTPV results at the same interface on the same aspects and elevation.

Winds were moderate with strong gusts for the SW near and above treeline and light to moderate for the SW below treeline. Plenty of blowing snow onto northerly aspects even with the wet heavy nature of the storm snow. Snow gave way to rain below 9100'.

Avalanche Photos: 
Blowing Snow: 
Yes
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Moderate
Precipitation: 
Mixed rain and snow
Air temperature trend: 
Static
Wind Direction: 
Southwest
Accumulation rate: 
Less than 1 in. per hour
More detailed information about the weather: 
Number of People Caught: 
0
37° 38' 50.64" N, 119° 3' 15.48" W
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