Not-so-noisy Noisy Basin
Location Name: Noisy Basin Observation date: Wednesday, December 12, 2018 - 15:00 |
Is this an Avalanche Observation: Yes |
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Observation made by: Forecaster
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Wednesday, December 12, 2018 - 05:00
Avalanche Type:
Hard Slab
Failure Plane/Weak Layer:
Old snow
Trigger:
natural
Trigger Modifier:
Cornice Fall Triggered
Start Zone Slope Angle:
40
Aspect:
Northeast
Starting Elevation:
above-treeline
Destructive Size:
D1.5
Relative Size:
R2 Small
Crown Height:
2 ft
Avalanche Length (Vertical Run):
150ft.
Avalanche Width (Average width):
60ft.
Avalanche Location:
2 slides below cornice on ENE side of ridge. Blocky debris in start zone with only an inch or so of new snow. One appeared to have broken on weak basal facets. HS closer to 50 cm than 100 cm of nearby areas.