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.

Snow / Terrain Evaluation Negro Canyon

Location Name: Negro Canyon Region: Donner Summit Area Observation Date & Time: Saturday, April 20, 2019 - 15:15
Location: 39.337334, -120.290558 See map: CalTopo	Is this an Avalanche Observation?: No Conditions Alerts: Rapid or Prolonged Warming Rapid or Prolonged Warming›Rain on Snow Rapid or Prolonged Warming›Warm Temperatures Terrain Alerts: Terrain Matches the Advisory

Observation made by: Public

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Observation

Description of Snow, Weather, and Avalanche Conditions:

Snow did not freeze overnight. Soft to to finger probe to depth of fingers. Snow had been rained on in the previous 3 hours. There were no signs of avalanche danger / loose wet slides. Snow depth was 95 cm and most of the snow on the south west facing aspect of donner ridge at the top had melted away.

Snowpack Details

Total Snow Depth:

95cm

Persistent Weak Layers:

Not observed

Terrain Details

Terrain: elevations:

Below Treeline

Terrain: aspects:

Weather Details

Elevation of Observation:

6000-7000 ft.

Blowing Snow:

None

Wind Direction:

Northeast

Wind Speed:

Moderate

Sky Cover:

Broken - Mostly Cloudy - more than 4/8 and less than 8/8

Highest Precipitation Rate:

Very Light Rain (RV -Rain produces no accumulation)

Precipitation:

Rain

Air temperature:

Above Freezing

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Snow / Terrain Evaluation Negro Canyon

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Snow / Terrain Evaluation Negro Canyon

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