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Eastern Sierra Avalanche Center

Public Observation

Observation Details

Observation Date:
March 3, 2023
Submitted:
March 3, 2023
Zone or Region:
Big Pine Creek
Activity:
Skiing/Snowboarding
Location:
Big Pine Large Natural Avalanches

Observations

Toured up mellow terrain above Big Pine creek with a very conservative agenda. We observed many very large hard slab avalanches that ran during and following the storm. Pretty much any northerly and many easterly aspects had massive crowns all over them. We didn't dig a pit or observe any cracking, but I did trigger a whumph on the lee of a ridge (nearly flat slope). South aspects were soft and made for very fun skiing, however on the easterly aspects we found a very challenging and grabby crust.

Right now I am pretty freaked out by the snowpack. Every single avalanche we saw was likely unsurvivable. I haven't really dealt with persistent layers like this, and I'm not sure how the healing will proceed over short and medium term.

Observed Avalanches

Did you observe any avalanches? 
Yes
Avalanche Type:
Hard Slab
Size:
Size 3: Could bury and destroy a car, damage a truck, destroy a wood frame house, or break a few trees
Elevation:
8500-12000
Aspect:
N
Comments:
Many large crowns on different mountains at different elevations

Media

Signs of Unstable Snow

Did you see shooting cracks? 
No
Did you experience collapsing or whumpfing? 
Yes, Isolated

Media

There were many crowns all over Mt. Alice's north face.
Crown on Kidd. Most of the gullies ran during the storm.
Wet movement on Alice's south east slope at 9k'. This was at around 11:00 AM
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