Sound the alarms, avalanche activity escalating in Flathead Range
| Location Name:  Forecaster Observation - Crystal Creek, Flathead Range Observation date:  Monday, December 18, 2017 - 17:15 | Is this an Avalanche Observation:  No | 
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	Observation made by: Forecaster
Location
Tabs
Avalanche Details: 
Date and Time of Avalanche: 
Monday, December 18, 2017 - 14:00
Avalanche Type: 
Soft Slab
Failure Plane/Weak Layer: 
Old snow
Trigger: 
skier
Trigger Modifier: 
Intentionally Triggered
Aspect: 
Northeast
Starting Elevation: 
near-treeline
Destructive Size: 
D1 Relatively harmless to people.
Relative Size: 
R1 Very Small
Crown Height: 
1 ft
Avalanche Length (Vertical Run): 
50ft.
Avalanche Width (Average width): 
100ft.
Number of people caught: 
0
Number of partial burials: 
0
Number of full burials: 
0
Avalanche Location: 
Date and Time of Avalanche: 
Monday, December 18, 2017 - 05:30
Avalanche Type: 
Soft Slab
Failure Plane/Weak Layer: 
Old snow
Trigger: 
natural
Aspect: 
North
Starting Elevation: 
below-treeline
Destructive Size: 
D1 Relatively harmless to people.
Relative Size: 
R1 Very Small
Crown Height: 
1 ft
Avalanche Location: 
Date and Time of Avalanche: 
Monday, December 18, 2017 - 18:45
Avalanche Type: 
Soft Slab
Failure Plane/Weak Layer: 
Old snow
Trigger: 
natural
Aspect: 
Northeast
Starting Elevation: 
near-treeline
Destructive Size: 
D2 Could bury, injure, or kill a person.
Relative Size: 
R2 Small
Crown Height: 
1 ft
Avalanche Length (Vertical Run): 
1000ft.
Avalanche Width (Average width): 
300ft.
Avalanche Location: 










Also a few similar avalanches on southerly aspects across the valley.