Sperry Basin, GNP
Location Name: Sperry (Glacier) Basin Observation date: Friday, April 19, 2019 - 13:00 |
Is this an Avalanche Observation: Yes |
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Observation made by: Public
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Thursday, April 18, 2019 - 15:00
Avalanche Type:
Wet Loose
Failure Plane/Weak Layer:
Old snow
Trigger:
natural
Aspect:
South
Starting Elevation:
above-treeline
Destructive Size:
D3.5
Relative Size:
R4 Large
Avalanche Length (Vertical Run):
2000ft.
Avalanche Width (Average width):
150ft.
Avalanche Location:
Crown was easily visible from our position and ran all the way across tthe middle of the bowl where it originated.