What's that? A weak layer?
Location Name: Forecaster Observation - WMR Sidecountry Observation date: Friday, February 21, 2020 - 19:15 |
Is this an Avalanche Observation: Yes |
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Observation made by: Forecaster
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Friday, February 21, 2020 - 13:30
Number of avalanches:
4
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Within storm snow
Trigger:
skier
Start Zone Slope Angle:
40
Aspect:
Southwest
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 Location:
Date and Time of Avalanche:
Friday, February 21, 2020 - 12:30
Number of avalanches:
1
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Unknown
More information or comments about the avalanche:
Seen in profile from across the canyon. Looked like a debris pile, not point releases. Couldn't see excatly where it released or how far it ran, so some characteristics estimated.
Trigger:
natural
Start Zone Slope Angle:
40
Aspect:
South
Starting Elevation:
5800
Destructive Size:
D2 Could bury, injure, or kill a person.
Relative Size:
R2 Small
Avalanche Length (Vertical Run):
200ft.
Avalanche Location:
Small wet sluffs released with ski turns on steep slopes where the snow surface was wet. These only involved the top few inches of the snowpack; some ran on a crust below that. None entrained snow on the slope below or gouged into older snow. Didn't run far.