Sluffs in the wind
Location Name: Flathead Range Observation date: Sunday, March 15, 2020 - 21:45 |
Is this an Avalanche Observation: Yes |
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Observation made by: Public
Tabs
Avalanche Details:
Date and Time of Avalanche:
Saturday, March 14, 2020 - 12:15
Avalanche Type:
Loose Dry/ Sluff
Failure Plane/Weak Layer:
Within storm snow
Trigger:
natural
Start Zone Slope Angle:
35
Aspect:
Southeast
Starting Elevation:
near-treeline
Destructive Size:
D1.5
Relative Size:
R2 Small
Avalanche Length (Vertical Run):
200ft.
Avalanche Width (Average width):
30ft.
Avalanche Location:
Date and Time of Avalanche:
Saturday, March 14, 2020 - 12:30
Avalanche Type:
Loose Dry/ Sluff
Failure Plane/Weak Layer:
Within storm snow
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):
800ft.
Avalanche Width (Average width):
60ft.
Avalanche Location:
Date and Time of Avalanche:
Saturday, March 14, 2020 - 12:30
Avalanche Type:
Loose Dry/ Sluff
Trigger:
natural
Start Zone Slope Angle:
35
Aspect:
North
Destructive Size:
D1 Relatively harmless to people.
Relative Size:
R1 Very Small
Avalanche Length (Vertical Run):
75ft.
Avalanche Width (Average width):
20ft.
Avalanche Location:
Date and Time of Avalanche:
Saturday, March 14, 2020 - 12:30
Avalanche Type:
Soft Slab
Trigger:
natural
Start Zone Slope Angle:
35
Aspect:
North
Starting Elevation:
near-treeline
Destructive Size:
D1.5
Relative Size:
R2 Small
Crown Height:
Less than 1 ft
Avalanche Length (Vertical Run):
75ft.
Avalanche Width (Average width):
50ft.
Avalanche Location:
Date and Time of Avalanche:
Saturday, March 14, 2020 - 12:30
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Within storm snow
Trigger:
Started by a loose dry from above
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 Width (Average width):
100ft.
Avalanche Location:
Date and Time of Avalanche:
Saturday, March 14, 2020 - 12:30
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Within storm snow
Trigger:
natural
Start Zone Slope Angle:
35
Aspect:
North
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):
350ft.
Avalanche Width (Average width):
100ft.
Avalanche Location:
Approximately half of these were D1 in size.