Slabby conditions on Grant Ridge
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      Location Name:  Forecaster Observation - Grant Ridge, Flathead Range Observation date:  Friday, December 14, 2018 - 14:00  | 
   
        Is this an Avalanche Observation:  Yes  | 
 
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	Observation made by: Forecaster
Tabs
Avalanche Details: 
Date and Time of Avalanche: 
Wednesday, December 12, 2018 - 08:00
Avalanche Type: 
Soft Slab
Failure Plane/Weak Layer: 
New/old snow interface
Trigger: 
natural
Trigger Modifier: 
Cornice Fall Triggered
Start Zone Slope Angle: 
35
Aspect: 
East
Starting Elevation: 
above-treeline
Destructive Size: 
D2 Could bury, injure, or kill a person.
Relative Size: 
R3 Medium
Crown Height: 
1 ft
Avalanche Length (Vertical Run): 
500ft.
Avalanche Width (Average width): 
100ft.
Avalanche Location: 
Date and Time of Avalanche: 
Wednesday, December 12, 2018 - 08:45
Avalanche Type: 
Soft Slab
Failure Plane/Weak Layer: 
New/old snow interface
More information or comments about the avalanche: 
I was only able to view the fracture line from a distance.
Trigger: 
natural
Start Zone Slope Angle: 
40
Aspect: 
Northeast
Starting Elevation: 
above-treeline
Destructive Size: 
D2.5
Relative Size: 
R3 Medium
Crown Height: 
2 ft
Avalanche Width (Average width): 
250ft.
Avalanche Location: 










Difficult to estimate size due to the fracture line being blown in by wind transport.