Northern swan survey
Location Name: Columbia mtn to Krause creek Observation date: Friday, April 1, 2022 - 12:45 |
Is this an Avalanche Observation: Yes |
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Observation made by: Public
Tabs
Avalanche Details:
Date and Time of Avalanche:
Sunday, March 27, 2022 - 12:00
Number of avalanches:
1
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Old snow
Trigger:
natural
Start Zone Slope Angle:
38
Aspect:
North
Starting Elevation:
above-treeline
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Crown Height:
1 ft
Avalanche Length (Vertical Run):
600ft.
Avalanche Width (Average width):
100ft.
Avalanche Location:
Date and Time of Avalanche:
Sunday, March 27, 2022 - 12:00
Number of avalanches:
1
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Old snow
More information or comments about the avalanche:
10' + tall debris pile at head of Krause creek. Photo 3
Trigger:
natural
Start Zone Slope Angle:
40
Aspect:
Northwest
Starting Elevation:
near-treeline
Destructive Size:
D3 - Could destroy a car, a wood house, or snap trees
Relative Size:
R3 Medium
Crown Height:
2 ft
Avalanche Length (Vertical Run):
1200ft.
Avalanche Width (Average width):
500ft.
Avalanche Location:
Doris peak N at 7200' persistent slab most likely on the early March AR crust. Possible windslab, did not examine crown or profile. Unsupported slope above cliffs. Photo 2.