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.

Wind Slab on Andesite Peak

Location Name: West side of North-Northwest Ridge of Andesite Peak Region: Donner Summit Area Observation Date & Time: Sunday, March 20, 2022 - 11:55
Location: 39.354023, -120.366429 See map: CalTopo	Is this an Avalanche Observation?: No Conditions Alerts: Other Signs of Instability (cracking, whumpfing, collapsing) Other Signs of Instability (cracking, whumpfing, collapsing)›Shooting Cracks Recent Loading Recent Loading›Blowing Snow Terrain Alerts: Terrain Matches the Advisory

Observation made by: Guide at Alpenglow Expeditions

Tabs

Observation

Description of Snow, Weather, and Avalanche Conditions:

Broke 29cm down at interface of wind deposited snow and old snow surface. Sensitivity was between stubborn and reactive. We had similar results on other test slopes with the same aspect lower on the ridge.

Wind slab and cracking on Andesite Peak

Terrain Details

Terrain: elevations:

Near Treeline

Terrain: aspects:

Weather Details

Elevation of Observation:

8000 - 9000 ft.

Blowing Snow:

Moderate

Wind Direction:

Northeast

Wind Speed:

Strong

Sky Cover:

Few - Mostly Clear - up to 2/8 covered

Air temperature:

Above Freezing

Sponsors:

This website is owned and maintained by the non-profit arm of the Sierra Avalanche Center. Some of the content is updated by the USDA avalanche forecasters including the forecasts and some observational data. The USDA is not responsible for any advertising, fund-raising events/information, or sponsorship information, or other content not related to the forecasts and the data pertaining to the forecasts.

Forecast Links

Subscriptions

Forecast Tutorials

Observations

Incidents

Submit Observations

Subscriptions

Remote Weather Stations

National Weather Service

Model Forecasts

Local Resources

The SAC Daily Flow

Forecast Tutorials

Other Resources

Wind Slab on Andesite Peak

Conditions Alerts:

Tabs

Sponsors:

Forecast Links

Subscriptions

Forecast Tutorials

Observations

Incidents

Submit Observations

Subscriptions

Remote Weather Stations

National Weather Service

Model Forecasts

Local Resources

The SAC Daily Flow

Forecast Tutorials

Other Resources

Wind Slab on Andesite Peak

Conditions Alerts:

Tabs

Search form

Follow Us

Sponsors: