Powder turns and avalanches in the Middle Fork
Location Name: Flathead Range Observation date: Thursday, April 16, 2020 - 20:15 |
Is this an Avalanche Observation: Yes |
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Observation made by: Public
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Tuesday, April 14, 2020 - 12:15
Number of avalanches:
1
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Other - explain below
Trigger:
natural
Trigger Modifier:
Cornice Fall Triggered
Start Zone Slope Angle:
40
Aspect:
Northeast
Starting Elevation:
7400'
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Crown Height:
3 ft
Avalanche Length (Vertical Run):
2000ft.
Avalanche Width (Average width):
150ft.
Avalanche Location:
Date and Time of Avalanche:
Thursday, April 16, 2020 - 16:00
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Within storm snow
More information or comments about the avalanche:
These slides occurred on NE-NW aspects.
Trigger:
natural
Start Zone Slope Angle:
40
Aspect:
Northwest
Starting Elevation:
near-treeline
Destructive Size:
D1.5
Relative Size:
R2 Small
Avalanche Length (Vertical Run):
200ft.
Avalanche Width (Average width):
30ft.
Avalanche Location:
Much of the snow in the path slid last week leaving minimal snow for entrainment. Otherwise, this would have been a D3. I would classify this as a D2+.