These observations document past conditions at a small and variable scale. They are not to be confused with an avalanche forecast. They come from a variety of sources. We can only vouch for the quality of those produced by the SAC forecasters and professional observers.
Date and time of observation or avalanche occurrence Location Media Observation made by
02/25/2023 - 12:30
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Public
11/20/2015 - 10:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster
12/03/2017 - 12:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		CTE Failure 15-20cm down in the snow packShooting Cracks up to 25 feet in length Educator
Tahoe Mountain Scho
04/20/2010 - 15:51
Avalanche Observation 		Andesite Ridge
Donner Summit Area
Forecaster
01/23/2016 - 13:30
Avalanche Observation 		Andesite Ridge
Donner Summit Area
Forecaster
02/29/2012 - 15:00
Avalanche Observation 		Andesite Ridge
Donner Summit Area
Forecaster
11/17/2017 - 12:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Rain runnels on the snow surface despite 3 to 5 inches of new snow after it stopped raining. Public
12/15/2015 - 12:55
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster
02/19/2017 - 14:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Guide
Tahoe Mountain Scho
01/14/2012 - 10:30
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster
04/18/2011 - 18:30
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster
12/30/2015 - 11:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster
03/08/2019 - 12:30
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Public
02/06/2021 - 13:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Educator
NORTH AMERICAN SKI TRAINING AND CLIMBI
02/07/2016 - 09:00
Snowpack Observation 		Andesite Ridge
Donner Summit Area 		Forecaster

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