Almost refreshed
Location Name: Forecaster Observation - Middle Fork Observation date: Sunday, March 8, 2020 - 18:45 |
Is this an Avalanche Observation: Yes |
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Observation made by: Forecaster
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Friday, March 6, 2020 - 12:15
Number of avalanches:
4
Avalanche Type:
Cornice
Failure Plane/Weak Layer:
Old snow
Trigger:
natural
Aspect:
East
Starting Elevation:
above-treeline
Destructive Size:
D1.5
Relative Size:
R2 Small
Avalanche Length (Vertical Run):
1200ft.
Date and Time of Avalanche:
Friday, March 6, 2020 - 12:00
Number of avalanches:
1
Avalanche Type:
Unknown
Failure Plane/Weak Layer:
Unknown
More information or comments about the avalanche:
Debris visible, skied across part of it on apron. With new snow and flat-ish light, I couldn't identify where it started - midslope? Ridge? Debris blue-ish, with some chunks and walls up slope of where I was that looked like classic wet snow debris. Debris starting near ridge could have descended into wet snow, so can't classify type as hard slab or wet loose or what. Without a good sense of full extent of debris, estimating this as D2/5, though it could be D3. Vertical run could be up to 1800 feet. Estimating date as 3/6 -warmest day recently - as day ran, though could be as old as 3/1, or have failed during 3/4 winds.
Trigger:
natural
Aspect:
Northeast
Starting Elevation:
above-treeline
Destructive Size:
D2.5
Relative Size:
R2 Small
Avalanche Length (Vertical Run):
1400ft.
Avalanche Location:
Guestimate of recent natural cornice fall activity. Flat light made it hard to be precise.