Forecaster Observation - Avalanche outside Whitefish Mountain Resort Boundary, Southern Whitefish Range

Location Name: 
Forecaster Observation - Outside of Whitefish Mountain Resort boundary, Southern Whitefish Range
Region: 
Whitefish Range - Southern (south of Coal Creek)
Date and time of avalanche (best estimate if unknown): 
Thu, 03/10/2016 - 11:00
Location Map: 

Red Flags: 
Recent avalanche activity
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Observation made by: Forecaster
Avalanche Observations
Avalanche Type: 
Dry
Slab
Slope: 
38degrees
Trigger type: 
Other - explain below
Crown Height: 
Less than 1 ft
Aspect: 
East
Weak Layer: 
Within storm snow
Avalanche Width: 
30ft.
Terrain: 
Below Treeline
Elevation: 
6 500ft.
Bed Surface: 
Old Snow
Avalanche Length: 
250ft.
More detailed information about the avalanche: 

Remotely skier triggered avalanche. We triggered the avalanche while approaching the slope from approximately 15 feet away.

Avalanche Photos: 
Weather Observations
Blowing Snow: 
No
Cloud Cover: 
100% of the sky covered by clouds
Air temperature: 
Above Freezing
Wind Speed: 
Light (Twigs in motion)
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: 
Activity: 
Skiing