Public Observation - Avalanche close to Stahl Peak

Location Name: 
Public Observation -Stahl Creek, Northern Whitefish Range
Region: 
Whitefish Range - Northern (north of Coal Creek)
Date and time of avalanche (best estimate if unknown): 
Sat, 02/06/2016 - 13:36
Location Map: 

Red Flags: 
Recent avalanche activity
Whumphing noises, shooting cracks, or collapsing
Recent loading by new snow, wind, or rain
Rapid warming
Obvious avalanche path
Observation made by: Public
Avalanche Observations
Avalanche Type: 
Slab
Slope: 
40degrees
Trigger type: 
Natural
Aspect: 
North
Elevation: 
6 000ft.
More detailed information about the avalanche: 

All chutes close to Gibralter Ridge. Recent activity. Did not appear to be cornice fall. Did not run full length of path. Although lots of tree bombs and pinwheeling on similar slopes. Cracked windslabs on the road from sidehilling. 10-20 cm thick. Expect to be deeper at higher elevations. Dug a pit off the Olney road yesterday and was able to propagate the Jan 28 crust with medium/hard force. And then able to propagate Jan 17 crust with very hard force. (Tap 9 from the shoulder)

Weather Observations
Blowing Snow: 
Yes
Wind Speed: 
Strong (Whole trees in motion)
Wind Direction: 
Southwest
More detailed information about the weather: 

Lots of wind affected snow at all elevations. Medium to large cornices hanging above north aspects. Deteriorating snow conditions throughout the day due to warmth. May see a crust develop. Especially on south aspects that the sun will hit.

Activity: 
Snowmobiling