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

Andesite Ridge - Graupel PWL 2/5

Location Name: Andesite Ridge Region: Donner Summit Area Observation Date & Time: Saturday, February 11, 2023 - 15:26
Location: 39.345128, -120.348262 See map: CalTopo	Is this an Avalanche Observation?: No Conditions Alerts: Persistent Problem

Observation made by: Educator at Blackbird Mountain Guides

Tabs

Observation

Description of Snow, Weather, and Avalanche Conditions:

Digging with AIARE students in a large clearing below treeline, at 7500' on a NE aspect we found a layer of graupel from 37 cm to 38 cm down.

Pit wall showing a layer of graupel (2/5) from 37 to 38 cm down.

Pit wall showing a layer of graupel (2/5) from 37 to 38 cm down.

Graupel 3 mm to 5 mm.

Graupel 3 mm to 5 mm.

Graupel 3 mm to 5 mm.

Graupel 3 mm to 5 mm.

Graupel 3 mm to 5 mm.

Graupel 3 mm to 5 mm.

CTM (14) SP

CTM (14) SP

Snowpit or crown profile photo or graph:

Sponsors:

Mt. Rose Ski Tahoe

Heavenly Mountain Resort

Kirkwood Mountain Resort

CA OHMVR

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.