Wind slabs in Rescue Creek
Location Name: Forecaster Observation- Rescue Creek, Flathead Range Observation date: Sunday, February 10, 2019 - 17:15 |
Is this an Avalanche Observation: Yes |
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Observation made by: Forecaster
Tabs
Avalanche Details:
Date and Time of Avalanche:
Friday, February 8, 2019 - 17:15
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Within storm snow
Trigger:
natural
Aspect:
East
Starting Elevation:
above-treeline
Destructive Size:
D1.5
Relative Size:
R2 Small
Crown Height:
1 ft
Avalanche Length (Vertical Run):
1500ft.
Avalanche Width (Average width):
50ft.
Avalanche Location:
Date and Time of Avalanche:
Friday, February 8, 2019 - 19:45
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Old snow
More information or comments about the avalanche:
Harder looking slab avalanche...multiple generations of windloading onto the 2/2 crust?
Trigger:
natural
Aspect:
West
Starting Elevation:
near-treeline
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Crown Height:
2 ft
Avalanche Length (Vertical Run):
500ft.
Avalanche Width (Average width):
100ft.
Avalanche Location:
Date and Time of Avalanche:
Sunday, February 10, 2019 - 15:45
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Within storm snow
More information or comments about the avalanche:
Small wind slab pockets on leeward (SW) side of trees.
Trigger:
skier
Trigger Modifier:
Intentionally Triggered
Aspect:
North
Starting Elevation:
near-treeline
Destructive Size:
D1 Relatively harmless to people.
Relative Size:
R1 Very Small
Crown Height:
Less than 1 ft
Avalanche Length (Vertical Run):
30ft.
Avalanche Width (Average width):
20ft.
Avalanche Location:
Mostly D1.5, a couple D2s. Likely soft, shallow slabs that entrained a lot of loose snow running long distances, probably down to 2/2 crust at some point in the track, but just as loose snow