Variable Snow pack alameda and Marion lake area
Location Name: Peak 7798 Observation date: Monday, January 21, 2019 - 13:30 |
Is this an Avalanche Observation: Yes |
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Observation made by: Public
Location
Tabs
Avalanche Details:
Date and Time of Avalanche:
Sunday, January 20, 2019 - 12:30
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
New/old snow interface
Trigger:
natural
Destructive Size:
D2 Could bury, injure, or kill a person.
Crown Height:
1 ft
Avalanche Length (Vertical Run):
1000ft.
Avalanche Location:
Date and Time of Avalanche:
Wednesday, January 23, 2019 - 08:45
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
New/old snow interface
More information or comments about the avalanche:
During our travel and skiing we found a very unstable layer between 6000-7000 feet that seemed to be moving on a layer of buried surface hoar. We observed large shooting cracks on short steep skin track sections and set off soft slab avalanches, D1, with crown of about 18 inches when skiing short steep drop
Trigger:
skier
Trigger Modifier:
Intentionally Triggered
Destructive Size:
D1 Relatively harmless to people.
Crown Height:
1 ft
On the Alameda side of the ridge we had planned to ski, observed a D2, storm slab, crown 1 foot that traveled over 1000 vertical feet.