Public Observation - Nyack Mountain Avalanche

Location Name: 
Public Observation - Cascadilla Creek, Flathead Range
Region: 
Flathead Range - Middle Fork Corridor
Date and time of avalanche (best estimate if unknown): 
Fri, 04/01/2016 - 16:00
Location Map: 

Red Flags: 
Recent avalanche activity
Rapid warming
Obvious avalanche path
Terrain Trap
Observation made by: Public
Avalanche Observations
Avalanche Type: 
Wet
Slab
Trigger type: 
Natural
Crown Height: 
5 ft
Aspect: 
East
Avalanche Width: 
300ft.
Terrain: 
Above Treeline
Elevation: 
7 000ft.
Avalanche Length: 
1 500ft.
More detailed information about the avalanche: 

Apparent cornice fall on East aspect of Nyack Mountain. Triggered slab just below cornice at approximately 7,200 ft.  Avalanche poured over convexity at approximately 6,000 feet and triggered another slab with crown depth exceeding 5 feet. Avalanche continued to lake. Upper crown is visible in picture.

Avalanche Photos: 
Weather Observations
Cloud Cover: 
Clear
Air temperature: 
Above Freezing
Precipitation: 
None
Air temperature trend: 
Warming
Activity: 
Skiing