Cold air to the Rescue after a significant avalanche cycle
Location Name: Forecaster Observation- Rescue Creek, Flathead Range Observation date: Friday, February 9, 2018 - 15:30 |
Is this an Avalanche Observation: Yes |
---|
Observation made by: Forecaster
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Thursday, February 8, 2018 - 10:30
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Old snow
Trigger:
natural
Aspect:
Northwest
Starting Elevation:
above-treeline
Destructive Size:
D3 - Could destroy a car, a wood house, or snap trees
Crown Height:
10 ft
Avalanche Width (Average width):
150ft.
Avalanche Location:
Date and Time of Avalanche:
Thursday, February 8, 2018 - 10:30
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Unknown
More information or comments about the avalanche:
Storm slabs/wind slabs
Trigger:
natural
Starting Elevation:
above-treeline
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Crown Height:
2 ft
Avalanche Length (Vertical Run):
1500ft.
Avalanche Width (Average width):
200ft.
Avalanche Location:
Date and Time of Avalanche:
Thursday, February 8, 2018 - 10:30
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Old snow
More information or comments about the avalanche:
Based on crown depth/ elevation, I estimate this failed on one of our mid January rain crusts. Debris looked pretty wet.
Trigger:
natural
Aspect:
Northeast
Starting Elevation:
near-treeline
Destructive Size:
D3 - Could destroy a car, a wood house, or snap trees
Crown Height:
3 ft
Avalanche Length (Vertical Run):
1500ft.
Avalanche Width (Average width):
800ft.
Avalanche Location:
Date and Time of Avalanche:
Thursday, February 8, 2018 - 10:45
Avalanche Type:
Wet Loose
More information or comments about the avalanche:
Mid and lower elevations.
Trigger:
natural
Starting Elevation:
near-treeline
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Avalanche Location:
I had views of 2 deep slab crowns and 1 debris pile that was probably a deep slab. Crowns were relatively narrow. Looks like they ran on Thanksgiving crust.