More slabs and wet loose
Location Name: Flathead Range Observation date: Monday, April 20, 2020 - 18:45 |
Is this an Avalanche Observation: Yes |
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Observation made by: Public
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Thursday, April 9, 2020 - 12:15
Number of avalanches:
1
Avalanche Type:
Wet Slab
Failure Plane/Weak Layer:
Other - explain below
Trigger:
natural
Start Zone Slope Angle:
35
Aspect:
Southeast
Starting Elevation:
6000'
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):
100ft.
Avalanche Location:
Date and Time of Avalanche:
Wednesday, April 15, 2020 - 00:45
Number of avalanches:
1
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Other - explain below
More information or comments about the avalanche:
Viewed from a distance. Did not get a good look at the debris pile and this may be a D 2.5. Assume it ran on the 3/24 crust.
Trigger:
natural
Start Zone Slope Angle:
40
Aspect:
Northeast
Starting Elevation:
7000'
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Crown Height:
3 ft
Avalanche Length (Vertical Run):
1200ft.
Avalanche Width (Average width):
200ft.
Avalanche Location:
Date and Time of Avalanche:
Thursday, April 16, 2020 - 00:45
Number of avalanches:
9
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Within storm snow
More information or comments about the avalanche:
3 D2 and 6 D 1.5.
Trigger:
natural
Start Zone Slope Angle:
35
Aspect:
Southeast
Starting Elevation:
near-treeline
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Avalanche Length (Vertical Run):
1000ft.
Avalanche Width (Average width):
50ft.
Avalanche Location:
Date and Time of Avalanche:
Thursday, April 16, 2020 - 14:00
Number of avalanches:
4
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Within storm snow
Trigger:
natural
Start Zone Slope Angle:
40
Aspect:
Northeast
Starting Elevation:
near-treeline
Destructive Size:
D1.5
Relative Size:
R1 Very Small
Avalanche Length (Vertical Run):
500ft.
Avalanche Width (Average width):
30ft.
Avalanche Location:
Several wet slabs ran at this elevation on southeasterly slopes in Great Bear Creek on 4/9/20. I am using that day in this instance.