Professional Observation - John F. Stevens Canyon, southern Glacier Park

Location Name: 
Professional Observation - John F. Stevens Canyon, southern Glacier Park
Region: 
Flathead Range/Glacier National Park - John F. Stevens Canyon
Date and time of avalanche (best estimate if unknown): 
Fri, 12/30/2016 - 12:00
Location Map: 

Red Flags: 
Recent avalanche activity
Recent loading by new snow, wind, or rain
Obvious avalanche path
Observation made by: Professional Observer
Avalanche Observations
Avalanche Type: 
Dry
Slope: 
40degrees
Trigger type: 
Natural
Crown Height: 
Less than 1 ft
Aspect: 
East
Weak Layer: 
Within storm snow
Avalanche Width: 
50ft.
Terrain: 
Near Treeline
Elevation: 
5 500ft.
Bed Surface: 
Old Snow
Avalanche Length: 
100ft.
More detailed information about the avalanche: 

Slab depths are 4” to 6” in depth and widespread in regards to elevation and exposure. Most occurred on slopes greater than about 40 degrees and have some solar exposure. Also, most are in the lower 1/3 elevation of the Program Area avalanche prone terrain.  NONE have stepped down into deeper layers.  

Avalanche Photos: 
Weather Observations
Air temperature: 
Precipitation: 
Air temperature trend: 
Wind Direction: 
Accumulation rate: 
More detailed information about the weather: