The last avalanche forecast for the 2023-2024 season will post on April 21st. Thank you to all who contributed to the avalanche center this season through observations, volunteer time, and/or financial contributions.

Wet loose avalanche

Location Name: Hellhole Observation Date & Time: Sunday, April 9, 2023 - 01:30
Location: 38.822069, -119.948485 See map: CalTopo	Is this an Avalanche Observation?: Yes Conditions Alerts: Avalanche Activity Rapid or Prolonged Warming Rapid or Prolonged Warming›Rollerballs / Pinwheels Rapid or Prolonged Warming›Warm Temperatures Terrain Alerts: Slopes Steeper than 30 degrees

Observation made by: Public

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Observation

Description of Snow, Weather, and Avalanche Conditions:

While snowmobiling with a friend in Hellhole, we both noticed signs of loose wet instabilities as seen by the pin wheels and loose wet slide. As the day got warmer we saw more of this activity on south facing slopes and made notation to stay off these slopes due to the underlying instability.

Terrain Details

Terrain: aspects:

Avalanche Details

Avalanche Type:

Wet Loose

Failure Plane/Weak Layer:

New/old snow interface

Trigger

Trigger:

Natural

Size

Destructive Size:

D1 Relatively harmless to people.

Crown Height:

Less than 1 ft

Avalanche Width (Average width):

20ft.

Avalanche Length (Vertical Run):

300ft.

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Wet loose avalanche

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Wet loose avalanche

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